foncièresvsfrontièresWhat's the difference?

Which to use

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

#21,942
“foncières” frequency rank
#2,777
“frontières” frequency rank
24719
confusion score

Side-by-Side Comparison

Feature foncières frontières
Definition Pluriel de foncière. Pluriel de frontière.

Where the eye mixes foncières and frontières

Muted = shared; highlighted = the visual trap. They share 8 letters in sequence. foncières runs 9 letters (CVCCVVCVC) against frontières's 10 (CCVCCVVCVC) - the length gap alone is often enough to separate them once you know to check it.

9 ch
foncières
10 ch
frontières

Visual trap between foncières and frontières

A purely visual mix-up. foncières (\fɔ̃.sjɛʁ\) and frontières (\fʁɔ̃.tjɛʁ\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 24719, derived from the frequency rank of both members and their visual similarity.

foncières is recorded at frequency rank #21,942, classified as anoun, pronounced \fɔ̃.sjɛʁ\. frontières is at rank #2,777, tagged as anoun, pronounced \fʁɔ̃.tjɛʁ\.

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 24719, this pair ranks #345,012 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of foncières vs frontières

Shared letters: efinorsè. Private to "foncières": c. Private to "frontières": t.

"foncières" · 9 letters · shape CVCCVVCVC  ·  "frontières" · 10 letters · shape CCVCCVVCVC

Frequently Asked Questions

Is swapping "foncières" for "frontières" ever safe?
No. They are said differently (\fɔ̃.sjɛʁ\ versus \fʁɔ̃.tjɛʁ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "foncières" vs "frontières" - which ranks higher?
"frontières" is the more common of the two: it sits at frequency rank #2,777 in our French list, against #21,942 for "foncières". 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 "foncières" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "frontières" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #345,012 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "foncières" and "frontières" also get mixed up with nearby pairs, the highest-scored neighbour is "foncées vs foncières". Nearby pair

Confusion rank #345,012 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