EtonvsexonTell them apart

Quick tell: Eton is a name, exon is a noun, so they fill different roles in a sentence.

Which to use

“Eton” is a name and “exon” is a noun - they look or sound alike but fill different roles in a sentence.

#25,377
“Eton” frequency rank
#49,909
“exon” frequency rank
75286
confusion score

Side-by-Side Comparison

Feature Eton exon
Definition A town and civil parish in Windsor and Maidenhead, Berkshire, England (OS grid ref SU965775). An officer of the King's Body Guard of the Yeomen of the Guard.

Letter map: Eton vs exon

Shared letters muted; letters that set Eton and exon apart highlighted. Shared run: 3. Eton and exon follow the identical consonant-vowel pattern (VCVC). Same shape at a glance is often the real trap, independent of shared letters.

4 ch
Eton
4 ch
exon

Role in the sentence - Eton and exon

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Eton is aname and exonanoun. On the page they differ by a single letter - t in “Eton” becomes x in “exon”. Our composite confusion score for this pair is 75286, derived from the frequency rank of both members and their visual similarity.

Eton is recorded at frequency rank #25,377, classified as aname, pronounced /ˈiː.tən/. exon is at rank #49,909, tagged as anoun.

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 75286, this pair ranks #33,618 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of Eton vs exon

Shared letters: eno. Private to "Eton": t. Private to "exon": x.

"Eton" · 4 letters · shape VCVC  ·  "exon" · 4 letters · shape VCVC

Known mistypes of this pair

  • Eton ← eotn · etno · etonn · etton · teon
  • exon ← eoxn · exno · exonn · xeon

Frequently Asked Questions

Is swapping "Eton" for "exon" ever safe?
No - they are not even the same part of speech. "Eton" is a name and "exon" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "Eton" or "exon" show up more?
"Eton" is the more common of the two: it sits at frequency rank #25,377 in our English list, against #49,909 for "exon". 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 "Eton" and "exon".

  • Full dictionary entry for "Eton" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "exon" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #33,618 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Eton" and "exon" also get mixed up with nearby pairs, the highest-scored neighbour is "Enos vs exon". 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 #33,618 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list