# cis vs cup

> English confusable word pair

## The two words

### cis
*adjective · IPA /sɪs/ · frequency rank #13,115*
Having two mutations on two genes on the same chromosome of a homologous pair.

### cup
*noun · IPA /kʌp/ · frequency rank #805*
A concave vessel for drinking, usually made of opaque material (as opposed to a glass) and with a handle.

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