# erg

> English word · Noun · IPA /ɜːɡ/ · frequency rank #48,222

## Definitions
1. 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.

## Etymology
From Ancient Greek ἔργον (érgon, “work”). Doublet of ergon and work.

## Easily confused with
- **ex** (https://plainspell.com/en/vs/erg-vs-ex)
- **et** (https://plainspell.com/en/vs/erg-vs-et)
- **EU** (https://plainspell.com/en/vs/erg-vs-eu)
- **ES** (https://plainspell.com/en/vs/erg-vs-es)
- **EV** (https://plainspell.com/en/vs/erg-vs-ev)
- **ew** (https://plainspell.com/en/vs/erg-vs-ew)
- **ey** (https://plainspell.com/en/vs/erg-vs-ey)
- **ez** (https://plainspell.com/en/vs/erg-vs-ez)
- **eye** (https://plainspell.com/en/vs/erg-vs-eye)
- **eve** (https://plainspell.com/en/vs/erg-vs-eve)
- **est** (https://plainspell.com/en/vs/erg-vs-est)
- **EVA** (https://plainspell.com/en/vs/erg-vs-eva)
- **err** (https://plainspell.com/en/vs/erg-vs-err)
- **eta** (https://plainspell.com/en/vs/erg-vs-eta)
- **ESA** (https://plainspell.com/en/vs/erg-vs-esa)
- **erm** (https://plainspell.com/en/vs/erg-vs-erm)
- **eth** (https://plainspell.com/en/vs/erg-vs-eth)
- **evo** (https://plainspell.com/en/vs/erg-vs-evo)
- **ERS** (https://plainspell.com/en/vs/erg-vs-ers)
- **ESL** (https://plainspell.com/en/vs/erg-vs-esl)

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