GuillonvsGuillouTell them apart

Which to use

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

#35,533
“Guillon” frequency rank
#48,565
“Guillou” frequency rank
84098
confusion score

Side-by-Side Comparison

Feature Guillon Guillou
Definition Nom de famille. Nom de famille.

Letter map: Guillon vs Guillou

Shared letters muted; letters that set Guillon and Guillou apart highlighted. Shared run: 6. Guillon (CVVCCVC) and Guillou (CVVCCVV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

7 ch
Guillon
7 ch
Guillou

Pair insight - Guillon / Guillou

Guillon and Guillou are indexed as a confusable French pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by a single letter - n in “Guillon” becomes u in “Guillou”. Our composite confusion score for this pair is 84098, derived from the frequency rank of both members and their visual similarity.

Guillon is recorded at frequency rank #35,533, classified as aname, pronounced \gi.jɔ̃\. Guillou is at rank #48,565, tagged as aname.

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 84098, this pair ranks #13,571 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of Guillon vs Guillou

Shared letters: gilou. Private to "Guillon": n. Private to "Guillou": -.

"Guillon" · 7 letters · shape CVVCCVC  ·  "Guillou" · 7 letters · shape CVVCCVV

Known mistypes of this pair

  • Guillon ← gguillon · giullon · guillno · guillonn · guiloln · guilon · gulilon · ugillon
  • Guillou ← gguillou · giullou · guilluo · guilolu · guilou · gulilou · ugillou

Frequently Asked Questions

Do "Guillon" and "Guillou" mean the same thing in a sentence?
No. They differ by a single letter - n in “Guillon” becomes u in “Guillou”, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.
In ordinary French text, does "Guillon" or "Guillou" show up more?
"Guillon" is the more common of the two: it sits at frequency rank #35,533 in our French list, against #48,565 for "Guillou". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "Guillon" and "Guillou".

  • Full dictionary entry for "Guillon" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Guillou" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #13,571 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "Guillon" and "Guillou" also get mixed up with nearby pairs, the highest-scored neighbour is "grillon vs Guillou". 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 #13,571 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