# momentous vs momentum

> English confusable word pair

## The two words

### momentous
*adjective · IPA /məʊˈmɛn.təs/ · frequency rank #25,143*
Outstanding in importance, of great consequence.

### momentum
*noun · IPA /ˌmə(ʊ)ˈmɛntəm/ · frequency rank #6,379*
Of a body in motion: the tendency of a body to maintain its inertial motion; the product of its mass and velocity, or the vector sum of the products of its masses and velocities.

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