vainvsvasTell them apart

Quick tell: vain is a adjective, vas is a noun, so they fill different roles in a sentence.

Which to use

“vain” is an adjective and “vas” is a noun - they look or sound alike but fill different roles in a sentence.

#10,632
“vain” frequency rank
#28,419
“vas” frequency rank
39051
confusion score

Side-by-Side Comparison

Feature vain vas
Definition Overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments with slight reason. A vessel or duct transporting any bodily fluid, such as blood, lymph, chyle, or semen.

Where the eye mixes vain and vas

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
vain
3 ch
vas

Visual trap between vain and vas

These two trip readers on the page rather than in the ear: vain is /veɪn/ while vas is /ˈvæs/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 39051, derived from the frequency rank of both members and their visual similarity.

vain is recorded at frequency rank #10,632, classified as anadj, pronounced /veɪn/. vas is at rank #28,419, tagged as anoun, pronounced /ˈvæs/.

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 39051, this pair ranks #280,308 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of vain vs vas

Shared letters: av. Private to "vain": in. Private to "vas": s.

"vain" · 4 letters · shape CVVC  ·  "vas" · 3 letters · shape CVC

Known mistypes of this pair

  • vainavin · vainn · vani · vvain

Frequently Asked Questions

Is swapping "vain" for "vas" ever safe?
No - they are not even the same part of speech. "vain" is an adjective and "vas" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "vain" or "vas"?
"vain" is the more common of the two: it sits at frequency rank #10,632 in our English list, against #28,419 for "vas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "vain" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "vas" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #280,308 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "vain" and "vas" also get mixed up with nearby pairs, the highest-scored neighbour is "vas vs VH". 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 #280,308 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list