Head to head · Boys' names
Cassius vs Clay
#582 vs #573 in 2025
Clay is a whisker ahead (#573 vs #582 in 2025), but the curves point different ways: Clay is holding its place on the charts, Cassius is stepping back from its peak.
Cast your vote
Which one would you pick?
Your gut first, the numbers after — the split shows once you pick.
The tale of the tape
On the charts, Clay leads 5 measures of 6; Cassius leads 0.
Ranks, counts and years are measured in the official US birth record; the classroom and living figures are estimates computed from it. The dot marks the side each measure favours on the charts — more common, not better.
What the records say
146 years of US births, drawn on one scale
Two curves, one scale
Who owned which decade
- 1880s: Cassius #691, Clay #354 — Clay higher
- 1890s: Cassius #839, Clay #355 — Clay higher
- 1900s: Cassius #1373, Clay #374 — Clay higher
- 1910s: Cassius #2071, Clay #483 — Clay higher
- 1920s: Cassius #2616, Clay #508 — Clay higher
- 1930s: Cassius #3012, Clay #532 — Clay higher
- 1940s: Cassius #2714, Clay #558 — Clay higher
- 1950s: Cassius #3273, Clay #375 — Clay higher
- 1960s: Cassius #1668, Clay #338 — Clay higher
- 1970s: Cassius #2415, Clay #378 — Clay higher
- 1980s: Cassius #2548, Clay #430 — Clay higher
- 1990s: Cassius #2038, Clay #407 — Clay higher
- 2000s: Cassius #1375, Clay #624 — Clay higher
- 2010s: Cassius #721, Clay #732 — Cassius higher
- 2020s: Cassius #542, Clay #596 — Cassius higher
Clay stood higher in 13 of 15 decades; Cassius has held the lead since the 2010s.
Rank by decade
| Decade | Cassius | Clay |
|---|---|---|
| 1880s | #691 | #354 |
| 1890s | #839 | #355 |
| 1900s | #1373 | #374 |
| 1910s | #2071 | #483 |
| 1920s | #2616 | #508 |
| 1930s | #3012 | #532 |
| 1940s | #2714 | #558 |
| 1950s | #3273 | #375 |
| 1960s | #1668 | #338 |
| 1970s | #2415 | #378 |
| 1980s | #2548 | #430 |
| 1990s | #2038 | #407 |
| 2000s | #1375 | #624 |
| 2010s | #721 | #732 |
| 2020s | #542 | #596 |
Average national rank across each decade. A dash means the name sat outside the recorded top of that decade.
The names themselves
Meaning, roots, sound and the people who carried each
Where each name comes from
Cassius
Most often read as "empty, hollow, vain," from Latin cassus
Two positions compete. The standard proposal links the family name to the Latin adjective cassus, "empty" or "hollow" — the same root behind words for something void. The other holds that Cassius, like many old Roman clan names, is simply older than Latin etymology can reach, an Italic family label whose sense was already lost by the Republic. Roman nomina were inherited, not chosen for meaning, so the family carried it for centuries without anyone taking it as a description.
Cassius (Roman nomen) → Cassianus → Cassian → Cassio
How it traveled
Cassius began as a Roman nomen, the name of the gens Cassia, a family present in Rome's records from the early Republic onward. Its best-known bearer, Gaius Cassius Longinus, joined the conspiracy against Julius Caesar in 44 BC — which is how the name reached English readers, first through Roman historians and then through Shakespeare, who gave Cassius some of the most quoted lines in Julius Caesar.
Clay
clay — the earth a potter or bricklayer works with
From Old English clǣg. As a surname it marked someone who lived on clay ground or worked it; as a given name it also serves as the short form of Clayton, the place name meaning "settlement on clay soil."
clǣg (Old English) → Clay (English surname) → Clayton → Clay (given name)
How it traveled
The word came first: clǣg in Old English, the heavy soil that could be dug, shaped and fired. Families who lived beside clay beds or made their living from them took it as a surname in medieval England, and the same element built place names like Clayton and Clayborne, which crossed to America and became surnames there too.
Where a reading is contested the note says so — this page does not turn a guess into a fact. The chain is each name's recorded forms, oldest first; the story is its opening, told in full on the name's own page.
Out loud, and in short
Cassius
KASH-us
Two pronunciations circulate in American English: KASH-us, the more common, and the three-syllable KASS-ee-us, closer to the Latin KAS-see-oos. Both are correct; families generally pick one and repeat it.
- Cass — The default short form, used for boys and girls alike; also given on its own as a full name.
- Cash — An informal shortening that has grown alongside Cash as an independent given name for boys.
- Cas — A spelling variant of the same short form, more common in writing than in speech.
- Cassie — Heard occasionally, though in the US it attaches far more often to Cassandra and Cassidy, and reads as feminine to most ears.
Clay
KLAY
One syllable, rhyming with day. Because it is spelled exactly like the English word, almost no one needs it explained twice.
- Clay — Already a single syllable, so it usually stands as it is; it also serves as the everyday short form for men formally named Clayton or Clayborne.
- Clayton — The longer name Clay is often shortened from — worth knowing if you want a fuller version on documents.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Cassius if you want…
- a name past its most crowded yearsCassius is stepping back from its peak
- a name with more sound in itCassius runs 3 syllables, Clay 1
- plenty of nickname options4 recorded short forms — Cass, Cash and Cas
Choose Clay if you want…
- a name on the way upup 71 places on the charts in five years
- a name with fewer syllablesClay is 1 syllable to Cassius's 3
Each line is a measured difference between the two names — a rank, a count, a recorded form — never a judgement of either. Save the one that answers your question; it lands on your shortlist.
The trade-offs, name by name
Cassius
Strengths
- An unbroken written record from the Roman Republic to the present, so the spelling is already familiar to anyone who has read Shakespeare or Roman history.
- Two established one-syllable short forms, Cass and Cash, both in genuine use.
- Recognizable across Italian, Portuguese, Spanish and Polish in forms close enough that the name survives a border.
To consider
- The pronunciation genuinely splits: KASH-us and KASS-ee-us are both in use, so he will correct people, or be corrected, throughout his life. Choosing one early and using it consistently is most of the fix.
- The leading etymology, Latin cassus, means "empty" or "hollow" — an unappealing reading if a meaning matters to you, though Roman families inherited such names without ever treating them as descriptions.
- The strongest historical association is with the conspirator who helped kill Caesar, and Shakespeare's portrait of him is not flattering. Most people recall the name before the plot, but some readers will make the link.
Clay
Strengths
- Four letters, one syllable, and spelled like a word every English speaker already knows — no repeating, no correcting, no alternate spellings to fend off.
- A documented record stretching from medieval English surnames to continuous American use since the nineteenth century.
- Familiar to nearly everyone without being a name a child will share with classmates.
To consider
- It is a plain English noun as well as a name, so the ordinary meanings travel with it — potter's clay, clay pigeons, and the old biblical phrase "feet of clay." Most Clays find this unremarkable, but it is there.
- One clipped syllable can land flat against a short surname. Say the full name aloud a few times before deciding.
- As a surname-turned-first-name, it occasionally gets read as a last name on forms and rosters — a small, fixable annoyance rather than a real problem.
Documented properties of each name — how it spells, travels and shortens — not opinions about the child.
With your last name
Say both in full. The notes are facts about letters and sound — a rhyme, a shared initial, the monogram — not a verdict on either name.
Type a last name to hear Cassius and Clay in full.
Weighing the whole shortlist? Run the full comparison — up to eight names with your last name, initials, classroom projections and a printable report.
Decide together
Nobody names a baby alone
Still torn between Cassius and Clay?
Put both to the vote.
One link to your partner, your parents, your sister. Each of them gets the two names, a one-tap answer and room to say why — and every reply lands in one place.
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More than two in the running? Settle it with a bracket or run the full comparison with your last name.
More head-to-heads
Same measures, different pair. Sixty more are dealt daily in the arena.
Lists these names appear on
- Victorian names ready for a second century
- Hero and god names for boys
- Dark academia names with candlelit gravitas
- Ancient Roman names in modern use
- all guides
Where Cassius and Clay each sit in the library — alternatives in the same style, ranked by the same records.
Cassius or Clay — the short answers
- Which is more popular, Cassius or Clay?
- Clay, in 2025: Clay ranked #573 with 515 babies; Cassius ranked #582 with 504 babies.
- Which name is rising faster, Cassius or Clay?
- Clay. Over the last five years Cassius moved down 94 places; Clay moved up 71 places.
- Which is the older name, Cassius or Clay?
- The US record cannot say: both were already in use when it began in 1880.
- How many people are named Cassius and Clay?
- About 9,200 people named Cassius are estimated to be alive in the US today. About 32,500 people named Clay are estimated to be alive in the US today.
- Will there be other Cassiuss or Clays in the classroom?
- Cassius will almost certainly be the only one in school. Clay will almost certainly be the only one in school.
US figures from the Social Security Administration, 1880–2025. Votes are battle voters on this site, not the birth record. Data & methodology
Keep playing
Sixty more head-to-heads are dealt in the arena every day — or line up Cassius, Clay and the rest of your shortlist with your last name in one printable report.
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