Which to use
“aca” is a noun and “aha” is an intj - they look or sound alike but fill different roles in a sentence.
- #3,222
- “aca” frequency rank
- #45,719
- “aha” frequency rank
- 48941
- confusion score
Side-by-Side Comparison
| Feature | aca | aha |
|---|---|---|
| Definition | Residuo sólido indigerible del bolo alimenticio, que se excreta a través del ano. | Ajá. |
Where the eye mixes aca and aha
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses aca with aha
These two trip readers on the page rather than in the ear: aca is [ˈaka] while aha is /ɑːˈhɑː/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - c in “aca” becomes h in “aha”, and the parts of speech differ too (noun vs intj), which is usually the fastest check. Our composite confusion score for this pair is 48941, derived from the frequency rank of both members and their visual similarity.
aca is recorded at frequency rank #3,222, classified as anoun, pronounced [ˈaka]. aha is at rank #45,719, tagged as anintj, pronounced /ɑːˈhɑː/.
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 48941, this pair ranks #111,647 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of aca vs aha
Shared letters: a. Private to "aca": c. Private to "aha": h.
"aca" · 3 letters · shape VCV · "aha" · 3 letters · shape VCV
Frequently Asked Questions
Is swapping "aca" for "aha" ever safe?
Frequency check: "aca" vs "aha" - which ranks higher?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "aca" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "aha" - compare definitions side by side with the headword page. Word entry
- This pair ranks #111,647 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "aca" and "aha" also get mixed up with nearby pairs, the highest-scored neighbour is "aha vs anta". Nearby pair
Confusion rank #111,647 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.