Which to use
“Mach” is a name and “mask” is a noun - they look or sound alike but fill different roles in a sentence.
- #20,990
- “Mach” frequency rank
- #4,251
- “mask” frequency rank
- 25241
- confusion score
Side-by-Side Comparison
| Feature | Mach | mask |
|---|---|---|
| Definition | A surname from Czech. | A cover, or partial cover, for the face, used for disguise or protection. |
Where the spellings diverge
Shared letters are muted; the letters that actually set Mach and mask apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
Mach and mask form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They share most of their letters but differ in 2 positions - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 25241, derived from the frequency rank of both members and their visual similarity.
Mach is recorded at frequency rank #20,990, classified as aname, pronounced /mɑːk/. mask is at rank #4,251, tagged as anoun, pronounced /mɑːsk/.
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 25241, this pair ranks #395,827 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "Mach" and "mask" be used interchangeably?
Remembering Mach vs mask
The fastest way to pick the right one every time.
- Check the role first: if you need a name, it's “Mach”; for a noun, it's “mask”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “Mach” entry
- Browse more pairs most likely to be confused. Most confusable