Which to use
“APEC” is a name and “API” is a noun - they look or sound alike but fill different roles in a sentence.
- #42,524
- “APEC” frequency rank
- #11,501
- “API” frequency rank
- 54025
- confusion score
Side-by-Side Comparison
| Feature | APEC | API |
|---|---|---|
| Definition | A regional trade agreement between Australia, Canada, Chile, China, Japan, Mexico, New Zealand, Papua New Guinea, Peru, Russia, South Korea, Taiwan (under the name Chinese Taipei), Hong Kong, the US, and members of ASEAN. | Initialism of active pharmaceutical ingredient. |
Letter map: APEC vs API
Shared letters muted; letters that set APEC and API apart highlighted. Shared run: 2.
Grammar separator: APEC vs API
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: APEC is aname and APIanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 54025, derived from the frequency rank of both members and their visual similarity.
APEC is recorded at frequency rank #42,524, classified as aname. API is at rank #11,501, tagged as anoun, pronounced /ˌeɪˌpiˈaɪ/.
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 54025, this pair ranks #144,324 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of APEC vs API
Shared letters: ap. Private to "APEC": ce. Private to "API": i.
"APEC" · 4 letters · shape VCVC · "API" · 3 letters · shape VCV
Known mistypes of this pair
- APEC ← aepc · apecc · appec
Frequently Asked Questions
Is swapping "APEC" for "API" ever safe?
Which is more common, "APEC" or "API"?
What to do next
Done with this confusable. These links stay specific to "APEC" and "API".
- Full dictionary entry for "APEC" 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 #144,324 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "APEC" and "API" also get mixed up with nearby pairs, the highest-scored neighbour is "alc vs APEC". 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 #144,324 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.