# soi vs sum

> English confusable word pair

## The two words

### soi
*noun · frequency rank #34,694*
In Thailand, a side-street branching off a major street; an alley or lane.

### sum
*noun · IPA /sʌm/ · frequency rank #4,050*
A quantity obtained by addition or aggregation.

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