abavsachWhich spelling fits?

Quick tell: aba is a noun, ach is an intj, so they fill different roles in a sentence.

Which to use

“aba” is a noun and “ach” is an intj - they look or sound alike but fill different roles in a sentence.

#15,719
“aba” frequency rank
#48,212
“ach” frequency rank
63931
confusion score

Side-by-Side Comparison

Feature aba ach
Definition parte saliente da beira das vestimentas, ou outros materiais de pano, para uso das pessoas, tais como vestido, paletó, toldo etc oh

Letter map: aba vs ach

Shared letters muted; letters that set aba and ach apart highlighted. Shared run: 1. aba (VCV) and ach (VCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
aba
3 ch
ach

Grammar separator: aba vs ach

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: aba is anoun and achanintj. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 63931, derived from the frequency rank of both members and their visual similarity.

aba is recorded at frequency rank #15,719, classified as anoun, pronounced /ˈa.bɐ/. ach is at rank #48,212, tagged as anintj.

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 63931, this pair ranks #5,986 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of aba vs ach

Shared letters: a. Private to "aba": b. Private to "ach": ch.

"aba" · 3 letters · shape VCV  ·  "ach" · 3 letters · shape VCC

Frequently Asked Questions

Do "aba" and "ach" mean the same thing in a sentence?
No - they are not even the same part of speech. "aba" is a noun and "ach" an intj, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "aba" or "ach" show up more?
"aba" is the more common of the two: it sits at frequency rank #15,719 in our Portuguese list, against #48,212 for "ach". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "aba" and "ach".

  • Full dictionary entry for "aba" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ach" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #5,986 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "aba" and "ach" also get mixed up with nearby pairs, the highest-scored neighbour is "ach vs acs". Nearby pair

Confusion rank #5,986 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