# SMP vs su

> English confusable word pair

## The two words

### SMP
*noun · frequency rank #41,382*
Initialism of statutory maternity pay (“payments made by an employer to an employee who is absent from work due to their pregnancy”).

### su
*noun · frequency rank #8,094*
Alternative form of xu (“former Vietnamese currency”).

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