Which to use
“AmEx” is a name and “annex” is a noun - they look or sound alike but fill different roles in a sentence.
- #29,905
- “AmEx” frequency rank
- #14,883
- “annex” frequency rank
- 44788
- confusion score
Side-by-Side Comparison
| Feature | AmEx | annex |
|---|---|---|
| Definition | Abbreviation of American Express. | An addition, an extension. |
Letter map: AmEx vs annex
Shared letters muted; letters that set AmEx and annex apart highlighted. Shared run: 3. AmEx runs 4 letters (VCVC) against annex's 5 (VCCVC) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: AmEx vs annex
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: AmEx is aname and annexanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 44788, derived from the frequency rank of both members and their visual similarity.
AmEx is recorded at frequency rank #29,905, classified as aname. annex is at rank #14,883, tagged as anoun, pronounced /ˈænɛks/.
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 44788, this pair ranks #227,330 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of AmEx vs annex
Shared letters: aex. Private to "AmEx": m. Private to "annex": n.
"AmEx" · 4 letters · shape VCVC · "annex" · 5 letters · shape VCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "AmEx" for "annex" ever safe?
Which is more common, "AmEx" or "annex"?
After this comparison
Pair "AmEx" vs "annex" is on the table, pick a follow-up below.
- Full dictionary entry for "AmEx" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "annex" - compare definitions side by side with the headword page. Word entry
- This pair ranks #227,330 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "AmEx" and "annex" also get mixed up with nearby pairs, the highest-scored neighbour is "amb vs AmEx". 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 #227,330 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.