# cone vs cos

> English confusable word pair

## The two words

### cone
*noun · IPA /ˈkəʊn/ · frequency rank #9,153*
A surface of revolution formed by rotating a segment of a line around another line that intersects the first line.

### cos
*noun · IPA /kɑs/ · frequency rank #6,553*
Synonym of romaine lettuce, a long-leaved variety of lettuce.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/cone-vs-cos