# STA vs STI

> English confusable word pair

## The two words

### STA
*name · frequency rank #19,212*
Initialism of State Transport Authority.

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

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