archvsascoWhich spelling fits?

Quick tell: arch is a verb, asco is a noun, so they fill different roles in a sentence.

Which to use

“arch” is a verb and “asco” is a noun - they look or sound alike but fill different roles in a sentence.

#35,879
“arch” frequency rank
#37,190
“asco” frequency rank
73069
confusion score

Side-by-Side Comparison

Feature arch asco
Definition arquear, tomar a forma de um arco nojo

Letter map: arch vs asco

Shared letters muted; letters that set arch and asco apart highlighted. Shared run: 2.

4 ch
arch
4 ch
asco

Part-of-speech tell for arch / asco

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: arch is averb and ascoanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 73069, derived from the frequency rank of both members and their visual similarity.

arch is recorded at frequency rank #35,879, classified as averb. asco is at rank #37,190, tagged as anoun, pronounced /ˈaʃ.ku/.

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 73069, this pair ranks #2,872 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of arch vs asco

Shared letters: ac. Private to "arch": hr. Private to "asco": os.

"arch" · 4 letters · shape VCCC  ·  "asco" · 4 letters · shape VCCV

Known mistypes of this pair

  • archacrh · arcch · archh · arhc · arrch · rach
  • ascoascco · asoc · assco

Frequently Asked Questions

Is swapping "arch" for "asco" ever safe?
No - they are not even the same part of speech. "arch" is a verb and "asco" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "arch" vs "asco" - which ranks higher?
"arch" is the more common of the two: it sits at frequency rank #35,879 in our Portuguese list, against #37,190 for "asco". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "arch" vs "asco" is on the table, pick a follow-up below.

  • Full dictionary entry for "arch" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "asco" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #2,872 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "arch" and "asco" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs asco". 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 #2,872 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