Which to use
“erg” is a noun and “ergo” is an adverb - they look or sound alike but fill different roles in a sentence.
- #48,222
- “erg” frequency rank
- #30,025
- “ergo” frequency rank
- 78247
- confusion score
Side-by-Side Comparison
| Feature | erg | ergo |
|---|---|---|
| Definition | 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. | Consequently, therefore, or thus. |
Where the spellings diverge
Shared letters are muted; the letters that actually set erg and ergo apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: erg is /ɜːɡ/ while ergo is /ˈɛɚɡoʊ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “erg” sits inside “ergo”, and the parts of speech differ too (noun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 78247, derived from the frequency rank of both members and their visual similarity.
erg is recorded at frequency rank #48,222, classified as anoun, pronounced /ɜːɡ/. ergo is at rank #30,025, tagged as anadv, pronounced /ˈɛɚɡoʊ/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 78247, this pair ranks #25,087 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of erg vs ergo
Shared letters: egr. Private to "erg": -. Private to "ergo": o.
"erg" · 3 letters · shape VCC · "ergo" · 4 letters · shape VCCV
Known mistypes of this pair
- ergo ← egro · erggo · erog · errgo · rego
Frequency comparison
Frequently Asked Questions
Can "erg" and "ergo" be used interchangeably?
Which is more common, "erg" or "ergo"?
Remembering erg vs ergo
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “erg”; for an adverb, it's “ergo”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “erg” entry
- Browse more pairs most likely to be confused. Most confusable