eravsergoWhat's the difference?

Quick tell: era is a noun, ergo is an adverb, so they fill different roles in a sentence.

Which to use

“era” is a noun and “ergo” is an adverb - they look or sound alike but fill different roles in a sentence.

#25,528
“era” frequency rank
#12,900
“ergo” frequency rank
38428
confusion score

Side-by-Side Comparison

Feature era ergo
Definition Ära, Epoche, Zeitalter eine Schlussfolgerung einleitendes Wort

Letter map: era vs ergo

Shared letters muted; letters that set era and ergo apart highlighted. Shared run: 2.

3 ch
era
4 ch
ergo

Role in the sentence - era and ergo

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: era is anoun and ergoanadverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 38428, derived from the frequency rank of both members and their visual similarity.

era is recorded at frequency rank #25,528, classified as anoun, pronounced […]. ergo is at rank #12,900, tagged as anadv, pronounced [ˈɛʁɡo].

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 38428, this pair ranks #1,564,250 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of era vs ergo

Shared letters: er. Private to "era": a. Private to "ergo": go.

"era" · 3 letters · shape VCV  ·  "ergo" · 4 letters · shape VCCV

Known mistypes of this pair

  • ergoegro · erggo · erog · errgo · rego

Frequently Asked Questions

Is swapping "era" for "ergo" ever safe?
No - they are not even the same part of speech. "era" is a noun and "ergo" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "era" or "ergo"?
"ergo" is the more common of the two: it sits at frequency rank #12,900 in our German list, against #25,528 for "era". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "era" and "ergo".

  • Full dictionary entry for "era" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ergo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,564,250 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "era" and "ergo" also get mixed up with nearby pairs, the highest-scored neighbour is "era vs puzzles". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #1,564,250 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list