Which to use
“anno” is a noun and “ao” is a contraction - they look or sound alike but fill different roles in a sentence.
- #40,121
- “anno” frequency rank
- #21,556
- “ao” frequency rank
- 61677
- confusion score
Side-by-Side Comparison
| Feature | anno | ao |
|---|---|---|
| Definition | Año | Contracción de la preposición a ("a") y el artículo o ("el"): (al). |
Where the eye mixes anno and ao
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: anno vs ao
These two trip readers on the page rather than in the ear: anno is /ˈan.no/ while ao is [ɔ]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (noun vs contraction), which is usually the fastest check. Our composite confusion score for this pair is 61677, derived from the frequency rank of both members and their visual similarity.
anno is recorded at frequency rank #40,121, classified as anoun, pronounced /ˈan.no/. ao is at rank #21,556, tagged as acontraction, pronounced [ɔ].
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 61677, this pair ranks #54,620 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of anno vs ao
Shared letters: ao. Private to "anno": n. Private to "ao": -.
"anno" · 4 letters · shape VCCV · "ao" · 2 letters · shape VV
Known mistypes of this pair
- anno ← ano · anon · nano
Frequently Asked Questions
Can "anno" and "ao" be used interchangeably?
In ordinary Spanish text, does "anno" or "ao" show up more?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "anno" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ao" - compare definitions side by side with the headword page. Word entry
- This pair ranks #54,620 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "anno" and "ao" also get mixed up with nearby pairs, the highest-scored neighbour is "anno vs anta". 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 #54,620 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.