Head to head · Girls' names
Nova vs Riley
#46 vs #48 in 2025 · both stepping back from its peak
Nova is a whisker ahead (#46 vs #48 in 2025) and both are stepping back from its peak. The records will not split these two — sound, story and your own last name will.
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, Nova leads 3 measures of 6; Riley leads 2.
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: Nova #796, Riley — — Nova higher
- 1890s: Nova #716, Riley — — Nova higher
- 1900s: Nova #686, Riley — — Nova higher
- 1910s: Nova #754, Riley — — Nova higher
- 1920s: Nova #778, Riley #4510 — Nova higher
- 1930s: Nova #856, Riley #4175 — Nova higher
- 1940s: Nova #1400, Riley #4624 — Nova higher
- 1950s: Nova #2016, Riley #5091 — Nova higher
- 1960s: Nova #1914, Riley #6417 — Nova higher
- 1970s: Nova #1668, Riley #5803 — Nova higher
- 1980s: Nova #3064, Riley #2304 — Riley higher
- 1990s: Nova #4304, Riley #393 — Riley higher
- 2000s: Nova #1760, Riley #68 — Riley higher
- 2010s: Nova #399, Riley #37 — Riley higher
- 2020s: Nova #37, Riley #40 — Nova higher
Nova stood higher in 11 of 15 decades; Nova took the 2020s.
Rank by decade
| Decade | Nova | Riley |
|---|---|---|
| 1880s | #796 | — |
| 1890s | #716 | — |
| 1900s | #686 | — |
| 1910s | #754 | — |
| 1920s | #778 | #4510 |
| 1930s | #856 | #4175 |
| 1940s | #1400 | #4624 |
| 1950s | #2016 | #5091 |
| 1960s | #1914 | #6417 |
| 1970s | #1668 | #5803 |
| 1980s | #3064 | #2304 |
| 1990s | #4304 | #393 |
| 2000s | #1760 | #68 |
| 2010s | #399 | #37 |
| 2020s | #37 | #40 |
Average national rank across each decade. A dash means the name sat outside the recorded top of that decade.
Around the world
Nova
- Scotland#74
- Canada#79
- England & Wales#80
Riley
- Canada#74
National statistics offices, latest published year.
The names themselves
Meaning, roots, sound and the people who carried each
Where each name comes from
Nova
"New" (Latin); also, in astronomy, a star that suddenly brightens
Nova is the feminine form of the Latin adjective novus, "new." The star sense comes from the same word and is the reason most English speakers recognize it.
novus (Latin, "new") → nova (feminine form) → stella nova ("new star") → Nova
How it traveled
" The Danish astronomer Tycho Brahe fixed it in scientific language with De nova stella, his 1573 account of the brilliant star that had appeared in Cassiopeia the previous year; later astronomers clipped stella nova down to nova, and it has meant a suddenly bright star ever since. The same adjective named Nova Scotia — New Scotland — when the Latin grant was made in 1621.
Riley
Either 'descendant of Raghallach' (Irish) or 'rye clearing' (English)
Two separate surnames arrived at the same spelling. The Irish Ó Raghallaigh means 'descendant of Raghallach', an old personal name whose own meaning has never been settled. The English Riley comes from places such as Ryley in Lancashire, from Old English ryge 'rye' and lēah 'wood, clearing'. Both readings are sound; which one sits behind a particular family usually depends on where that family came from.
Raghallach → Ó Raghallaigh → O'Reilly → Reilly → Riley
How it traveled
The Irish road runs through Ó Raghallaigh, the name of a family long associated with County Cavan, anglicized as O'Reilly and then Reilly, with Riley emerging as one of its common spellings among emigrants. The English road is quite separate: a place name from Lancashire, built from the Old English words for rye and for a woodland clearing, which became a surname for people who came from there.
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
Nova
NOH-vuh
Stress on the first syllable. In Spanish- and Portuguese-speaking households the final vowel is usually fuller: NOH-vah.
- Novie — Informal, family-level affectionate form; also spelled Novi.
- No-no — A toddler-years pet form rather than anything that follows a child to school.
- Nova — Works the other way round too: Nova serves as the everyday short form for longer names like Novalee and Novella.
Riley
RYE-lee
Stress on the first syllable. Pronounced the same way for boys and girls, and identically across Reilly, Rylee and Ryleigh.
- Ry — The most common informal clip, used within families and among friends.
- Riles — Casual and affectionate, mostly used by peers rather than adults.
- Rye — Occasional playful shortening; leans on the English rye-clearing reading.
Who has carried each name
Nova
No documented entry for Nova yet.
Riley
Riley Keough (b. 1989) — Daisy Jones & the Six star, Elvis Presley's granddaughter
Source: Wikidata — the one source on this page that is not an official agency.
Is it right for you
The differences that decide it, laid out by what you want
Choose by what you want
Choose Nova if you want…
- a name that charts abroad tooNova is on the national lists of Scotland, Canada and England & Wales
Choose Riley if you want…
On the measures here, the records do not separate Riley from Nova.
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
Nova
Strengths
- Spelled the way it sounds and read correctly on the first try by almost anyone literate in English.
- A real Latin word with a documented meaning, so the answer to "what does it mean?" is short and certain.
- Already in use in Scotland, Canada, and England & Wales, and pronounceable in Spanish, Portuguese, and Italian.
To consider
- In Spanish, "no va" means "doesn't go" — the old joke about the Chevy Nova car. It rarely comes up in practice, but the name is strongest in Texas, California, and Florida, so it is worth knowing about in advance.
- Nearly everyone carrying this name right now is a small child, so it reads as very much of this moment. There are few adult Novas to grow up alongside, and the name will likely be date-stamped to this era.
- It appears on both boys' and girls' pages, but as one word-name traveling two ways rather than two separate names meeting. A boy named Nova will be the rarer case by a wide margin, and will do some explaining.
Riley
Strengths
- Reads exactly as it is spelled for English speakers — no correction needed after the first hearing.
- Works for a boy or a girl without changing anything, since the source is a family name rather than a gendered one.
- Two clean syllables that sit easily beside most surnames, long or short.
To consider
- The spelling competes with Rylee, Ryleigh and Reilly, all pronounced the same. Expect to spell it aloud fairly often, though the plain Riley form is the one most people default to.
- In the US this spelling goes mainly to girls, so a boy named Riley will meet the occasional wrong assumption on a class list or a form. It is a correction, not a problem.
- Its wave is recent and concentrated, so most Rileys alive today are close in age — the name reads as belonging to a particular generation rather than as an old family name.
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 Nova and Riley 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 Nova and Riley?
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.
Free to start · no account needed · everyone you invite votes in one tap
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 that carry both names
Every list here names both Nova and Riley — the same style, ranked by the same records.
Nova or Riley — the short answers
- Which is more popular, Nova or Riley?
- Nova, in 2025: Nova ranked #46 with 4,657 babies; Riley ranked #48 with 4,441 babies.
- Which name is rising faster, Nova or Riley?
- Neither is rising. Over the last five years Nova moved down 8 places; Riley moved down 15 places.
- Which is the older name, Nova or Riley?
- Nova entered the US charts in 1885; Riley entered the US charts in 1923. On the American record, Nova is the older name.
- How many people are named Nova and Riley?
- About 52,500 people named Nova are estimated to be alive in the US today. About 141,000 people named Riley are estimated to be alive in the US today.
- Will there be other Novas or Rileys in the classroom?
- Nova will almost certainly be the only one in school. Riley will almost certainly be the only one in school.
US figures from the Social Security Administration, 1880–2025; international figures from national statistics agencies. 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 Nova, Riley and the rest of your shortlist with your last name in one printable report.
Free to start · no account needed · everyone you invite votes in one tap