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. |
Where the spellings diverge
Shared letters are muted; the letters that actually set APEC and API apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
APEC and API form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. 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.
Frequency comparison
Frequently Asked Questions
Can "APEC" and "API" be used interchangeably?
Remembering APEC vs API
The fastest way to pick the right one every time.
- Check the role first: if you need a name, it's “APEC”; for a noun, it's “API”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “APEC” entry
- Browse more pairs most likely to be confused. Most confusable