# STI vs Styx

> English confusable word pair

## The two words

### STI
*noun · frequency rank #26,266*
Initialism of sexually transmitted infection (also S.T.I.).

### Styx
*name · IPA /stɪks/ · frequency rank #47,356*
The river, in Hades, over which the souls of the dead are ferried by Charon.

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