sleeveless vs vain

sleeveless and vain both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sleeveless	No	Yes	No	No
vain	No	Yes	No	No

As adjectives, sleeveless and vain are synonyms defined as:

Other synonyms of sleeveless include bootless, fruitless, futile.

sleeveless (adjective)	vain (adjective)
having no sleeves	characteristic of false pride; having an exaggerated sense of self-importance
unproductive of success	unproductive of success