# API vs aye

> English confusable word pair

## The two words

### API
*noun · IPA /ˌeɪˌpiˈaɪ/ · frequency rank #11,501*
Initialism of active pharmaceutical ingredient.

### aye
*adverb · IPA /eɪ/ · frequency rank #8,388*
Ever, always.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/api-vs-aye