# eff vs Erc

> English confusable word pair

## The two words

### eff
*noun · IPA /ɛf/ · frequency rank #17,352*
Alternative spelling of ef; the name of the Latin script letter F/f.

### Erc
*name · frequency rank #43,630*
A member of the conspiracy that killed Cúchulainn, but was killed by his second cousin Conall the Victorious. Son of Cairbre Nia Fer and brother of Achall.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/eff-vs-erc