# SFO vs SK

> English confusable word pair

## The two words

### SFO
*name · frequency rank #42,889*
Initialism of Serious Fraud Office.

### SK
*phrase · frequency rank #14,837*
Initialism of stop keying/stop key, indicating a desire to end the conversation.

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