Which to use
“planet” and “plank” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #2,123
- “planet” frequency rank
- #15,884
- “plank” frequency rank
- 18007
- confusion score
Side-by-Side Comparison
| Feature | planet | plank |
|---|---|---|
| Definition | Each of the seven major bodies which move relative to the fixed stars in the night sky—the Moon, Mercury, Venus, the Sun, Mars, Jupiter and Saturn. | A long, broad and thick piece of timber, as opposed to a board which is less thick. |
Where the eye mixes planet and plank
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses planet with plank
A purely visual mix-up. planet (/ˈplænɪt/) and plank (/ˈplæŋk/) 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 18007, derived from the frequency rank of both members and their visual similarity.
planet is recorded at frequency rank #2,123, classified as anoun, pronounced /ˈplænɪt/. plank is at rank #15,884, tagged as anoun, pronounced /ˈplæŋk/.
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 18007, this pair ranks #447,738 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of planet vs plank
Shared letters: alnp. Private to "planet": et. Private to "plank": k.
"planet" · 6 letters · shape CCVCVC · "plank" · 5 letters · shape CCVCC
Known mistypes of this pair
Frequently Asked Questions
Do "planet" and "plank" mean the same thing in a sentence?
In ordinary English text, does "planet" or "plank" show up more?
Useful next steps
Eye-level mix-up between "planet" and "plank" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "planet" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "plank" - compare definitions side by side with the headword page. Word entry
- This pair ranks #447,738 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "planet" and "plank" also get mixed up with nearby pairs, the highest-scored neighbour is "Phan vs plank". 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 #447,738 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.