ontologievsontologiqueTell them apart

Quick tell: ontologie is a noun, ontologique is an adjective, so they fill different roles in a sentence.

Which to use

“ontologie” is a noun and “ontologique” is an adjective - they look or sound alike but fill different roles in a sentence.

#43,041
“ontologie” frequency rank
#41,940
“ontologique” frequency rank
84981
confusion score

Side-by-Side Comparison

Feature ontologie ontologique
Definition Partie de la philosophie qui a pour objet l’être en tant qu’être, qui étudie les propriétés générales de l’être. Qui a rapport à l’ontologie.

Where the eye mixes ontologie and ontologique

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. ontologie runs 9 letters (VCCVCVCVV) against ontologique's 11 (VCCVCVCVCVV) - the length gap alone is often enough to separate them once you know to check it.

9 ch
ontologie
11 ch
ontologique

Visual trap between ontologie and ontologique

These two trip readers on the page rather than in the ear: ontologie is \ɔ̃.tɔ.lɔ.ʒi\ while ontologique is \ɔ̃.tɔ.lɔ.ʒik\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 84981, derived from the frequency rank of both members and their visual similarity.

ontologie is recorded at frequency rank #43,041, classified as anoun, pronounced \ɔ̃.tɔ.lɔ.ʒi\. ontologique is at rank #41,940, tagged as anadj, pronounced \ɔ̃.tɔ.lɔ.ʒik\.

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 84981, this pair ranks #12,073 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of ontologie vs ontologique

Shared letters: egilnot. Private to "ontologie": -. Private to "ontologique": qu.

"ontologie" · 9 letters · shape VCCVCVCVV  ·  "ontologique" · 11 letters · shape VCCVCVCVCVV

Known mistypes of this pair

  • ontologie ← notologie · onntologie · onotlogie · ontloogie · ontolgoie · ontollogie · ontologei · ontologgie
  • ontologique ← notologique · onntologique · onotlogique · ontloogique · ontolgoique · ontollogique · ontologgique · ontologiqeu

Frequently Asked Questions

Can "ontologie" and "ontologique" be used interchangeably?
No - they are not even the same part of speech. "ontologie" is a noun and "ontologique" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "ontologie" vs "ontologique" - which ranks higher?
"ontologique" is the more common of the two: it sits at frequency rank #41,940 in our French list, against #43,041 for "ontologie". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "ontologie" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ontologique" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #12,073 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ontologie" and "ontologique" also get mixed up with nearby pairs, the highest-scored neighbour is "oncologie vs ontologie". 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 #12,073 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