Compare Names
Search for up to 4 names to compare side by side, or browse a curated comparison below.
- Ciaran
- Peter
| Field | Ciaran | Peter |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | male | male |
| Meaning | The unaccented catalogue spelling of Ciarán, a diminutive of Ciar ('black, dark') — borne by two 6th-century Irish saints, Ciarán the Elder (founder of Saighir) and Ciarán the Younger (founder of Clonmacnoise). | From Greek Petros ('stone'), a translation of the Aramaic Cephas, the name Jesus gave to the apostle Simon. |
| Origin | Irish, from Old Irish ciar ('dark') | Greek/Aramaic, biblical |
| Pronunciation | /ˈciə.ɾˠaːnˠ/ | /ˈpit.əɹ/ |
| Syllables | 2 | 2 |
| Common variants / nicknames | Ciarán, Kieran, Kieron, Kyran | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, GB-SCT, IE | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Republic of Ireland · Boys #372 (2025) | Republic of Ireland · Boys #152 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | 90/100 |
| Spelling simplicity (demonstration score) | 88/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | high | medium |
What the data shows
- Ciaran is recorded with a Irish, from Old Irish ciar ('dark') origin, while Peter is recorded with a Greek/Aramaic, biblical origin.
- Ciaran and Peter both have 2 syllables.
- Ciaran's recorded meaning differs from Peter's — see the table above for each.
- Both names have recorded usage in GB-ENW, GB-NIR, GB-SCT, IE.
- The available evidence gives Ciaran a "high" Data Confidence level and Peter a "medium" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.
Name rivalries — pairs whose positions genuinely passed each other →
Curated comparisons
Two of the UK's most enduringly popular girls' names, both with a soft, flowing sound and a similar era of peak popularity — the choice usually comes down to origin story and nickname preference.
Both are currently the most-used boys' names in several English-speaking countries. Oliver leans slightly more classic/literary; Noah is shorter and more globally portable.
Both short, currently-fashionable UK names — Freya carries Norse mythological weight, while Isla is a Scottish place name that reads as slightly softer and more understated.
Both carry regal, 'strength'-adjacent meanings and centuries of royal usage — Alexander is the more internationally familiar choice, Magnus the more distinctive.