# STI vs sun

> English confusable word pair

## The two words

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

### sun
*name · IPA /sʌn/ · frequency rank #1,154*
The star that is closest to the Earth.

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