Which to use
“plain” is an adjective and “planing” is a verb - they look or sound alike but fill different roles in a sentence.
- #3,446
- “plain” frequency rank
- #39,030
- “planing” frequency rank
- 42476
- confusion score
Side-by-Side Comparison
| Feature | plain | planing |
|---|---|---|
| Definition | Flat, level. | present participle and gerund of plane |
Where the eye mixes plain and planing
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Visual trap between plain and planing
These two trip readers on the page rather than in the ear: plain is /pleɪn/ while planing is /ˈpleɪnɪŋ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 42476, derived from the frequency rank of both members and their visual similarity.
plain is recorded at frequency rank #3,446, classified as anadj, pronounced /pleɪn/. planing is at rank #39,030, tagged as averb, pronounced /ˈpleɪnɪŋ/.
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 42476, this pair ranks #248,859 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of plain vs planing
Shared letters: ailnp. Private to "plain": -. Private to "planing": g.
"plain" · 5 letters · shape CCVVC · "planing" · 7 letters · shape CCVCVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "plain" for "planing" ever safe?
Which is more common, "plain" or "planing"?
After this comparison
Eye-level mix-up between "plain" and "planing" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "plain" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "planing" - compare definitions side by side with the headword page. Word entry
- This pair ranks #248,859 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "plain" and "planing" also get mixed up with nearby pairs, the highest-scored neighbour is "planing vs prancing". 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 #248,859 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.