Which to use
“acer” and “ach” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #24,367
- “acer” frequency rank
- #30,673
- “ach” frequency rank
- 55040
- confusion score
Side-by-Side Comparison
| Feature | acer | ach |
|---|---|---|
| Definition | A plant of the genus Acer; a maple. | Any of several species of plants, such as smallage, wild celery, parsley. |
Where the eye mixes acer and ach
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses acer with ach
A purely visual mix-up. acer (/ˈeɪsə/) and ach (/æt͡ʃ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 55040, derived from the frequency rank of both members and their visual similarity.
acer is recorded at frequency rank #24,367, classified as anoun, pronounced /ˈeɪsə/. ach is at rank #30,673, tagged as anoun, pronounced /æt͡ʃ/.
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 55040, this pair ranks #136,597 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of acer vs ach
Shared letters: ac. Private to "acer": er. Private to "ach": h.
"acer" · 4 letters · shape VCVC · "ach" · 3 letters · shape VCC
Known mistypes of this pair
- acer ← accer · acerr · aecr
Frequently Asked Questions
Is swapping "acer" for "ach" ever safe?
Which is more common, "acer" or "ach"?
What to do next
Eye-level mix-up between "acer" and "ach" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "acer" 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 #136,597 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "acer" and "ach" also get mixed up with nearby pairs, the highest-scored neighbour is "ach vs amb". 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 #136,597 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.