# API vs axis

> English confusable word pair

## The two words

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

### axis
*noun · IPA /ˈæksɪs/ · frequency rank #6,869*
An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry).

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