# modular vs modulus

> English confusable word pair

## The two words

### modular
*adjective · IPA /ˈmɒdjʊlə(ɹ)/ · frequency rank #14,795*
Consisting of separate modules; especially where each module performs or fulfills some specified function and could be replaced by a similar module for the same function, independently of the other modules.

### modulus
*noun · IPA /ˈmɒdjʊləs/ · frequency rank #39,433*
The base with respect to which a congruence is computed.

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