vain vs futile

vain and futile both are adjectives.

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

As adjectives, vain and futile are synonyms defined as:

Other synonyms of vain include bootless, fruitless, sleeveless.

vain (adjective)	futile (adjective)
characteristic of false pride; having an exaggerated sense of self-importance	unproductive of success
unproductive of success	producing no result or effect