# ko vs koi

> English confusable word pair

## The two words

### ko
*noun · IPA /ˈkəʊ/ · frequency rank #10,717*
A local shape to which the ko rule applies; a ko shape.

### koi
*noun · IPA /kɔɪ/ · frequency rank #26,483*
Ornamental domesticated varieties of the Amur carp (Cyprinus rubrofuscus), of Japan and eastern Asia with red-gold or white coloring.

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