biovsboyWhich spelling fits?

Quick tell: bio is a adjective, boy is a noun, so they fill different roles in a sentence.

Which to use

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

#2,984
“bio” frequency rank
#4,553
“boy” frequency rank
7537
confusion score

Side-by-Side Comparison

Feature bio boy
Definition Qui provient de l’agriculture biologique. Dans les colonies, valet, domestique.

Letter map: bio vs boy

Shared letters muted; letters that set bio and boy apart highlighted. Shared run: 2.

3 ch
bio
3 ch
boy

Part-of-speech tell for bio / boy

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bio is anadjective and boyanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 7537, derived from the frequency rank of both members and their visual similarity.

bio is recorded at frequency rank #2,984, classified as anadj. boy is at rank #4,553, tagged as anoun, pronounced \bɔj\.

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 7537, this pair ranks #422,878 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of bio vs boy

Shared letters: bo. Private to "bio": i. Private to "boy": y.

"bio" · 3 letters · shape CVV  ·  "boy" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "bio" for "boy" ever safe?
No - they are not even the same part of speech. "bio" is an adjective and "boy" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "bio" vs "boy" - which ranks higher?
"bio" is the more common of the two: it sits at frequency rank #2,984 in our French list, against #4,553 for "boy". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "bio" and "boy". Here's where to go from here.

  • Full dictionary entry for "bio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "boy" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #422,878 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "bio" and "boy" also get mixed up with nearby pairs, the highest-scored neighbour is "boy vs bury". Nearby pair

Confusion rank #422,878 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