# costal vs costly

> English confusable word pair

## The two words

### costal
*adjective · IPA /ˈkɑstl̩/ · frequency rank #46,995*
Pertaining to a rib.

### costly
*adjective · IPA /ˈkɒst.li/ · frequency rank #7,899*
Of high cost; expensive.

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