# SSI vs STD

> English confusable word pair

## The two words

### SSI
*noun · frequency rank #30,241*
Initialism of Server Side Include.

### STD
*noun · frequency rank #16,797*
Initialism of sexually transmitted disease.

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