Which to use
“acha” is a noun and “arch” is a verb - they look or sound alike but fill different roles in a sentence.
- #547
- “acha” frequency rank
- #35,879
- “arch” frequency rank
- 36426
- confusion score
Side-by-Side Comparison
| Feature | acha | arch |
|---|---|---|
| Definition | cavaca | arquear, tomar a forma de um arco |
Letter map: acha vs arch
Shared letters muted; letters that set acha and arch apart highlighted. Shared run: 3.
Part-of-speech tell for acha / arch
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: acha is anoun and archaverb. On the page they share most of their letters but differ in 3 positions. Our composite confusion score for this pair is 36426, derived from the frequency rank of both members and their visual similarity.
acha is recorded at frequency rank #547, classified as anoun, pronounced /ˈa.ʃɐ/. arch is at rank #35,879, tagged as averb.
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 36426, this pair ranks #30,386 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of acha vs arch
Shared letters: ach. Private to "acha": -. Private to "arch": r.
"acha" · 4 letters · shape VCCV · "arch" · 4 letters · shape VCCC
Known mistypes of this pair
Frequently Asked Questions
Can "acha" and "arch" be used interchangeably?
Frequency check: "acha" vs "arch" - which ranks higher?
After this comparison
Pair "acha" vs "arch" is on the table, pick a follow-up below.
- Full dictionary entry for "acha" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "arch" - compare definitions side by side with the headword page. Word entry
- This pair ranks #30,386 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "acha" and "arch" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs arch". 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 #30,386 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.