Vain or vein?
vain is an adjective meaning “Overly proud of oneself, especially concerning appearance; having a high…”; vein is a noun meaning “A blood vessel that transports blood from the capillaries back to the heart”. Use vain as an adjective and vein as a noun (vain is also a noun: “Acronym of vaginal intraepithelial neoplasia”). They sound the same (/veɪn/). In written English (wordfreq, 2021 data) vein is about as common as vain.
What is the difference between vain and vein?
| vain | vein | |
|---|---|---|
| Part of speech | adjective, verb, noun | noun, verb |
| Meaning | Overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments with slight reason Having no real substance, value, or importance; empty; void; worthless; unsatisfying | A blood vessel that transports blood from the capillaries back to the heart The entrails of a shrimp To mark with veins or a vein-like pattern |
| Example | vain toil a vain attempt | The nurse hovered her vein finder to locate the veins in the patient's body |
| Forms | vainer, vainest | veins |
| Pronunciation | /veɪn/ /ven/ /vein/ | /veɪn/ /ven/ /vein/ |
| In writing | 5.5 times per million words | 5.9 times per million words |
Sources: vain and vein in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Every current meaning of vain and vein
vain
- 1
Overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments with slight reason
- 2
Acronym of vaginal intraepithelial neoplasia
- 3
Having no real substance, value, or importance; empty; void; worthless; unsatisfying
- 4
Effecting no purpose; pointless, futile
vain toil a vain attempt
- 5
Showy; ostentatious
vein
- 1
A blood vessel that transports blood from the capillaries back to the heart
The nurse hovered her vein finder to locate the veins in the patient's body
- 2
To mark with veins or a vein-like pattern
- 3
The entrails of a shrimp
- 4
In leaves, a thickened portion of the leaf containing the vascular bundle
- 5
The nervure of an insect’s wing
- 6
A stripe or streak of a different colour or composition in materials such as wood, cheese, marble or other rocks
- 7
A sheetlike body of crystallized minerals within a rock
- 8
A topic of discussion; a train of association, thoughts, emotions, etc
in the same vein
Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.
Which is more common, vain or vein?
vain appears 5.5 times per million words; vein 5.9 times per million words.
vain 5.5 times per million wordsvein 5.9 times per million words
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How many people search vain vs vein?
“vain vs vein” is searched about 1,900 times a month on Google and 70 on Bing in the United States. Google counts close variants of a query together (“vein vs vain”, “vain or vein”).
Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.