# SI vs son

> English confusable word pair

## The two words

### SI
*name · frequency rank #5,453*
International System of Units

### son
*noun · IPA /sʌn/ · frequency rank #534*
One's male offspring.

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