Which to use
“capable” is an adjective and “capsule” is a noun - they look or sound alike but fill different roles in a sentence.
- #2,429
- “capable” frequency rank
- #11,176
- “capsule” frequency rank
- 13605
- confusion score
Side-by-Side Comparison
| Feature | capable | capsule |
|---|---|---|
| Definition | Able and efficient; having the ability needed for a specific task; having the disposition to do something; permitting or being susceptible to something. | A membranous envelope. |
Where the eye mixes capable and capsule
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Visual trap between capable and capsule
These two trip readers on the page rather than in the ear: capable is /ˈkeɪ.pə.bəl/ while capsule is /ˈkæps(ə)l/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 13605, derived from the frequency rank of both members and their visual similarity.
capable is recorded at frequency rank #2,429, classified as anadj, pronounced /ˈkeɪ.pə.bəl/. capsule is at rank #11,176, tagged as anoun, pronounced /ˈkæps(ə)l/.
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 13605, this pair ranks #474,807 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of capable vs capsule
Shared letters: acelp. Private to "capable": b. Private to "capsule": su.
"capable" · 7 letters · shape CVCVCCV · "capsule" · 7 letters · shape CVCCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "capable" for "capsule" ever safe?
Frequency check: "capable" vs "capsule" - which ranks higher?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "capable" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "capsule" - compare definitions side by side with the headword page. Word entry
- This pair ranks #474,807 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "capable" and "capsule" also get mixed up with nearby pairs, the highest-scored neighbour is "capable vs curable". 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 #474,807 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.