biovsbyWhat's the difference?

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

Which to use

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

#2,984
“bio” frequency rank
#2,462
“by” frequency rank
5446
confusion score

Side-by-Side Comparison

Feature bio by
Definition Qui provient de l’agriculture biologique. Fossé qui traverse un étang, aboutissant à sa bonde.

Letter map: bio vs by

Shared letters muted; letters that set bio and by apart highlighted. Shared run: 1.

3 ch
bio
2 ch
by

Role in the sentence - bio and by

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: bio is anadjective and byanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 5446, derived from the frequency rank of both members and their visual similarity.

bio is recorded at frequency rank #2,984, classified as anadj. by is at rank #2,462, tagged as anoun, pronounced \bi\.

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 5446, this pair ranks #428,996 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of bio vs by

Shared letters: b. Private to "bio": io. Private to "by": y.

"bio" · 3 letters · shape CVV  ·  "by" · 2 letters · shape CV

Frequently Asked Questions

Do "bio" and "by" mean the same thing in a sentence?
No - they are not even the same part of speech. "bio" is an adjective and "by" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "bio" or "by"?
"by" is the more common of the two: it sits at frequency rank #2,462 in our French list, against #2,984 for "bio". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "bio" and "by".

  • Full dictionary entry for "bio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "by" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #428,996 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "bio" and "by" also get mixed up with nearby pairs, the highest-scored neighbour is "bury vs by". Nearby pair

Confusion rank #428,996 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