Which to use
“ASTM” and “ASU” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #31,068
- “ASTM” frequency rank
- #27,368
- “ASU” frequency rank
- 58436
- confusion score
Side-by-Side Comparison
| Feature | ASTM | ASU |
|---|---|---|
| Definition | Initialism of American Society for Testing and Materials; former name of ASTM International. | Initialism of Arizona State University. |
Where the spellings diverge
Shared letters are muted; the letters that actually set ASTM and ASU apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
ASTM and ASU form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 58436, derived from the frequency rank of both members and their visual similarity.
ASTM is recorded at frequency rank #31,068, classified as aname. ASU is at rank #27,368, tagged as aname.
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 58436, this pair ranks #112,586 of 530,003 scored English confusable pairs - among the most confusable pairs.
Frequency comparison
Frequently Asked Questions
Can "ASTM" and "ASU" be used interchangeably?
Remembering ASTM vs ASU
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 “ASTM” entry
- Browse more pairs most likely to be confused. Most confusable