Which to use
“era” and “erg” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #2,153
- “era” frequency rank
- #48,222
- “erg” frequency rank
- 50375
- confusion score
Side-by-Side Comparison
| Feature | era | erg |
|---|---|---|
| Definition | A time period of indeterminate length, generally more than one year. | 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. |
Where the eye mixes era and erg
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: era vs erg
A purely visual mix-up. era (/ˈɪə.ɹə/) and erg (/ɜːɡ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by a single letter - a in “era” becomes g in “erg”. Our composite confusion score for this pair is 50375, derived from the frequency rank of both members and their visual similarity.
era is recorded at frequency rank #2,153, classified as anoun, pronounced /ˈɪə.ɹə/. erg is at rank #48,222, tagged as anoun, pronounced /ɜːɡ/.
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 50375, this pair ranks #174,888 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of era vs erg
Shared letters: er. Private to "era": a. Private to "erg": g.
"era" · 3 letters · shape VCV · "erg" · 3 letters · shape VCC
Frequently Asked Questions
Can "era" and "erg" be used interchangeably?
Frequency check: "era" vs "erg" - which ranks higher?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "era" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "erg" - compare definitions side by side with the headword page. Word entry
- This pair ranks #174,888 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "era" and "erg" also get mixed up with nearby pairs, the highest-scored neighbour is "erg vs Eri". Nearby pair
Confusion rank #174,888 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.