Which to use
“assemble” is a verb and “assembly” is a noun - they look or sound alike but fill different roles in a sentence.
- #12,182
- “assemble” frequency rank
- #2,425
- “assembly” frequency rank
- 14607
- confusion score
Side-by-Side Comparison
| Feature | assemble | assembly |
|---|---|---|
| Definition | To put together. | A set of pieces that work together in unison as a mechanism or device. |
Where the eye mixes assemble and assembly
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.
Why the eye confuses assemble with assembly
These two trip readers on the page rather than in the ear: assemble is /əˈsɛm.bəl/ while assembly is /əˈsɛmb.lɪ/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - e in “assemble” becomes y in “assembly”, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 14607, derived from the frequency rank of both members and their visual similarity.
assemble is recorded at frequency rank #12,182, classified as averb, pronounced /əˈsɛm.bəl/. assembly is at rank #2,425, tagged as anoun, pronounced /əˈsɛmb.lɪ/.
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 14607, this pair ranks #469,008 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of assemble vs assembly
Shared letters: abelms. Private to "assemble": -. Private to "assembly": y.
"assemble" · 8 letters · shape VCCVCCCV · "assembly" · 8 letters · shape VCCVCCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "assemble" for "assembly" ever safe?
Frequency check: "assemble" vs "assembly" - which ranks higher?
Useful next steps
Eye-level mix-up between "assemble" and "assembly" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "assemble" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "assembly" - compare definitions side by side with the headword page. Word entry
- This pair ranks #469,008 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "assemble" and "assembly" also get mixed up with nearby pairs, the highest-scored neighbour is "assemble vs assembler". 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 #469,008 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.