Which to use
“avian” is an adjective and “avis” is a noun - they look or sound alike but fill different roles in a sentence.
- #24,091
- “avian” frequency rank
- #32,685
- “avis” frequency rank
- 56776
- confusion score
Side-by-Side Comparison
| Feature | avian | avis |
|---|---|---|
| Definition | Characteristic of or pertaining to birds, or to bird-like or flying creatures. | advice; opinion; deliberation. |
Letter map: avian vs avis
Shared letters muted; letters that set avian and avis apart highlighted. Shared run: 3. avian runs 5 letters (VCVVC) against avis's 4 (VCVC) - the length gap alone is often enough to separate them once you know to check it.
Part-of-speech tell for avian / avis
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: avian is anadjective and avisanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 56776, derived from the frequency rank of both members and their visual similarity.
avian is recorded at frequency rank #24,091, classified as anadj, pronounced /ˈeɪvi.ən/. avis is at rank #32,685, tagged as anoun.
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 56776, this pair ranks #123,827 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of avian vs avis
Shared letters: aiv. Private to "avian": n. Private to "avis": s.
"avian" · 5 letters · shape VCVVC · "avis" · 4 letters · shape VCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "avian" for "avis" ever safe?
In ordinary English text, does "avian" or "avis" show up more?
What to do next
Pair "avian" vs "avis" is on the table, pick a follow-up below.
- Full dictionary entry for "avian" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "avis" - compare definitions side by side with the headword page. Word entry
- This pair ranks #123,827 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "avian" and "avis" also get mixed up with nearby pairs, the highest-scored neighbour is "Advil vs avis". 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 #123,827 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.