arm vs aún, What's the Difference?

Which to use

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

#35,354
“arm” frequency rank: #240
“aún” frequency rank: 35594
confusion score

Side-by-Side Comparison

Feature	arm	aún
Definition	Brazo.	Indica que el hecho persiste en el presente, aunque pueda cambiar en lo sucesivo..

Where the eye mixes arm and aún

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch

arm

3 ch

aún

Why the eye confuses arm with aún

These two trip readers on the page rather than in the ear: arm is /ɑːm/ while aún is [aˈũn]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 35594, derived from the frequency rank of both members and their visual similarity.

arm is recorded at frequency rank #35,354, classified as anoun, pronounced /ɑːm/. aún is at rank #240, tagged as anadv, pronounced [aˈũn].

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 35594, this pair ranks #185,228 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of arm vs aún

Shared letters: a. Private to "arm": mr. Private to "aún": nú.

"arm" · 3 letters · shape VCC · "aún" · 3 letters · shape VVC

Frequently Asked Questions

Can "arm" and "aún" be used interchangeably?

No - they are not even the same part of speech. "arm" is a noun and "aún" an adverb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "arm" or "aún"?

"aún" is the more common of the two: it sits at frequency rank #240 in our Spanish list, against #35,354 for "arm". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

Full dictionary entry for "arm" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "aún" - compare definitions side by side with the headword page. Word entry
This pair ranks #185,228 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
"arm" and "aún" also get mixed up with nearby pairs, the highest-scored neighbour is "arm vs atl". Nearby pair

Confusion rank #185,228 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.