Which to use
“occasion” and “occlusion” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #3,771
- “occasion” frequency rank
- #39,464
- “occlusion” frequency rank
- 43235
- confusion score
Side-by-Side Comparison
| Feature | occasion | occlusion |
|---|---|---|
| Definition | A favorable opportunity; a convenient or timely chance. | The process of occluding, or something that occludes. |
Where the eye mixes occasion and occlusion
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.
Look-alike desk: occasion vs occlusion
A purely visual mix-up. occasion (/əˈkeɪʒən/) and occlusion (/əˈkluː.ʒən/) 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 43235, derived from the frequency rank of both members and their visual similarity.
occasion is recorded at frequency rank #3,771, classified as anoun, pronounced /əˈkeɪʒən/. occlusion is at rank #39,464, tagged as anoun, pronounced /əˈkluː.ʒən/.
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 43235, this pair ranks #241,934 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of occasion vs occlusion
Shared letters: cinos. Private to "occasion": a. Private to "occlusion": lu.
"occasion" · 8 letters · shape VCCVCVVC · "occlusion" · 9 letters · shape VCCCVCVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "occasion" for "occlusion" ever safe?
Frequency check: "occasion" vs "occlusion" - which ranks higher?
Useful next steps
Eye-level mix-up between "occasion" and "occlusion" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "occasion" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "occlusion" - compare definitions side by side with the headword page. Word entry
- This pair ranks #241,934 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "occasion" and "occlusion" also get mixed up with nearby pairs, the highest-scored neighbour is "occasion vs occasioned". 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 #241,934 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.