Which to use
“ach” is an intj and “arch” is a verb - they look or sound alike but fill different roles in a sentence.
- #48,212
- “ach” frequency rank
- #35,879
- “arch” frequency rank
- 84091
- confusion score
Side-by-Side Comparison
| Feature | ach | arch |
|---|---|---|
| Definition | oh | arquear, tomar a forma de um arco |
Letter map: ach vs arch
Shared letters muted; letters that set ach and arch apart highlighted. Shared run: 3. ach runs 3 letters (VCC) against arch's 4 (VCCC) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: ach vs arch
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ach is anintj and archaverb. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 84091, derived from the frequency rank of both members and their visual similarity.
ach is recorded at frequency rank #48,212, classified as anintj. 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 84091, this pair ranks #841 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of ach vs arch
Shared letters: ach. Private to "ach": -. Private to "arch": r.
"ach" · 3 letters · shape VCC · "arch" · 4 letters · shape VCCC
Known mistypes of this pair
- arch ← acrh · arcch · archh · arhc · arrch · rach
Frequently Asked Questions
Do "ach" and "arch" mean the same thing in a sentence?
Frequency check: "ach" vs "arch" - which ranks higher?
What to do next
Done with this confusable. These links stay specific to "ach" and "arch".
- Full dictionary entry for "ach" 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 #841 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ach" and "arch" also get mixed up with nearby pairs, the highest-scored neighbour is "ach vs acs". 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 #841 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.