Which to use
“extension” and “extrusion” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #3,231
- “extension” frequency rank
- #38,833
- “extrusion” frequency rank
- 42064
- confusion score
Side-by-Side Comparison
| Feature | extension | extrusion |
|---|---|---|
| Definition | The act of extending; a stretching out; enlargement in length, breadth, or time; an increase. | A manufacturing process where a billet of material is pushed and/or drawn through a die to create a shaped rod, rail or pipe. |
Where the spellings diverge
Shared letters are muted; the letters that actually set extension and extrusion apart are highlighted. They share 7 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
extension and extrusion are indexed as a confusable English pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 42064, derived from the frequency rank of both members and their visual similarity.
extension is recorded at frequency rank #3,231, classified as anoun, pronounced /ɪkˈstɛnʃən/. extrusion is at rank #38,833, tagged as anoun.
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 42064, this pair ranks #252,635 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of extension vs extrusion
Shared letters: einostx. Private to "extension": -. Private to "extrusion": ru.
"extension" · 9 letters · shape VCCVCCVVC · "extrusion" · 9 letters · shape VCCCVCVVC
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "extension" and "extrusion" be used interchangeably?
Which is more common, "extension" or "extrusion"?
Remembering extension vs extrusion
The fastest way to pick the right one every time.
- Read both glosses above and match the meaning you intend, only context separates this pair.
- See each word in full, definition, IPA, etymology and its other confusables. Full “extension” entry
- Browse more pairs most likely to be confused. Most confusable