acsvsamWhat's the difference?

Quick tell: acs is a noun, am is an article, so they fill different roles in a sentence.

Which to use

“acs” is a noun and “am” is an article - they look or sound alike but fill different roles in a sentence.

#49,775
“acs” frequency rank
#2,705
“am” frequency rank
52480
confusion score

Side-by-Side Comparison

Feature acs am
Definition olho (órgão da visão) o / a usado com substantivos masculinos no caso nominativo singular quando a palavra começar com as letra b, f, m, p

Letter map: acs vs am

Shared letters muted; letters that set acs and am apart highlighted. Shared run: 1.

3 ch
acs
2 ch
am

Role in the sentence - acs and am

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: acs is anoun and amanarticle. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 52480, derived from the frequency rank of both members and their visual similarity.

acs is recorded at frequency rank #49,775, classified as anoun, pronounced [ats]. am is at rank #2,705, tagged as anarticle.

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 52480, this pair ranks #12,727 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of acs vs am

Shared letters: a. Private to "acs": cs. Private to "am": m.

"acs" · 3 letters · shape VCC  ·  "am" · 2 letters · shape VC

Frequently Asked Questions

Can "acs" and "am" be used interchangeably?
No - they are not even the same part of speech. "acs" is a noun and "am" an article, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "acs" or "am"?
"am" is the more common of the two: it sits at frequency rank #2,705 in our Portuguese list, against #49,775 for "acs". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Done with this confusable. These links stay specific to "acs" and "am".

  • Full dictionary entry for "acs" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "am" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #12,727 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "acs" and "am" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ASC". Nearby pair

Confusion rank #12,727 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list