# Erc vs erg

> English confusable word pair

## The two words

### 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.

### erg
*noun · IPA /ɜːɡ/ · frequency rank #48,222*
A unit of work or energy, being the amount of work done by a force of one dyne applied through a distance of one centimeter. Equal to 10⁻⁷ joules.

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