Which to use
“acs” and “API” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #45,982
- “acs” frequency rank
- #18,115
- “API” frequency rank
- 64097
- confusion score
Side-by-Side Comparison
| Feature | acs | API |
|---|---|---|
| Definition | Pluriel d’ac. | Alphabet phonétique international. |
Where the eye mixes acs and API
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. acs (VCC) and API (VCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses acs with API
A purely visual mix-up. acs (\ˈat͡s\) and API (\a.pi\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 64097, derived from the frequency rank of both members and their visual similarity.
acs is recorded at frequency rank #45,982, classified as anoun, pronounced \ˈat͡s\. API is at rank #18,115, tagged as anoun, pronounced \a.pi\.
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 64097, this pair ranks #78,705 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of acs vs API
Shared letters: a. Private to "acs": cs. Private to "API": ip.
"acs" · 3 letters · shape VCC · "API" · 3 letters · shape VCV
Frequently Asked Questions
Can "acs" and "API" be used interchangeably?
Frequency check: "acs" vs "API" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "acs" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "API" - compare definitions side by side with the headword page. Word entry
- This pair ranks #78,705 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "acs" and "API" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs aves". Nearby pair
Confusion rank #78,705 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.