ffavsfogTell them apart

Which to use

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

#49,084
“ffa” frequency rank
#46,768
“fog” frequency rank
95852
confusion score

Side-by-Side Comparison

Feature ffa fog
Definition Fèves. Brouillard, brume.

Where the eye mixes ffa and fog

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. ffa (CCV) and fog (CVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
ffa
3 ch
fog

Why the eye confuses ffa with fog

A purely visual mix-up. ffa (\faː\) and fog (\fɔɡ\) 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 95852, derived from the frequency rank of both members and their visual similarity.

ffa is recorded at frequency rank #49,084, classified as anoun, pronounced \faː\. fog is at rank #46,768, tagged as anoun, pronounced \fɔɡ\.

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 95852, this pair ranks #908 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of ffa vs fog

Shared letters: f. Private to "ffa": a. Private to "fog": go.

"ffa" · 3 letters · shape CCV  ·  "fog" · 3 letters · shape CVC

Frequently Asked Questions

Can "ffa" and "fog" be used interchangeably?
No. They are said differently (\faː\ versus \fɔɡ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "ffa" vs "fog" - which ranks higher?
"fog" is the more common of the two: it sits at frequency rank #46,768 in our French list, against #49,084 for "ffa". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "ffa" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fog" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #908 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ffa" and "fog" also get mixed up with nearby pairs, the highest-scored neighbour is "Fee vs ffa". Nearby pair

Confusion rank #908 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