ocrevsonceWhat's the difference?

Which to use

“ocre” and “once” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#26,110
“ocre” frequency rank
#11,815
“once” frequency rank
37925
confusion score

Side-by-Side Comparison

Feature ocre once
Definition Argile friable de couleur jaune, rouge ou brune suivant les oxydes, en particulier l’hydroxyde de fer et parfois d’oxyde de manganèse, qu’elle contient. Unité de mesure de la masse (système impérial britannique avoirdupois), qui vaut 28,3495231 grammes pour l'once commune → voir ounce. Ses symboles sont oz et ℥. L'once troy (troy ounce) équivaut pour sa part à 31,1034768 grammes.

Where the eye mixes ocre and once

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
ocre
4 ch
once

Look-alike desk: ocre vs once

A purely visual mix-up. ocre (\ɔkʁ\) and once (\ɔ̃s\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 37925, derived from the frequency rank of both members and their visual similarity.

ocre is recorded at frequency rank #26,110, classified as anoun, pronounced \ɔkʁ\. once is at rank #11,815, tagged as anoun, pronounced \ɔ̃s\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 37925, this pair ranks #258,990 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ocre vs once

Shared letters: ceo. Private to "ocre": r. Private to "once": n.

"ocre" · 4 letters · shape VCCV  ·  "once" · 4 letters · shape VCCV

Known mistypes of this pair

  • ocreoccre · ocer · ocrre · orce
  • onceocne · oncce · onec · onnce

Frequently Asked Questions

Is swapping "ocre" for "once" ever safe?
No. They are said differently (\ɔkʁ\ versus \ɔ̃s\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "ocre" or "once" show up more?
"once" is the more common of the two: it sits at frequency rank #11,815 in our French list, against #26,110 for "ocre". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "ocre" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "once" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #258,990 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ocre" and "once" also get mixed up with nearby pairs, the highest-scored neighbour is "och vs ocre". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #258,990 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list