aimless vs vagrant

aimless is not a noun while vagrant is a noun.

Word	Noun	Adjective	Verb	Adverb
aimless	No	Yes	No	No
vagrant	Yes	Yes	No	No

As adjectives, aimless and vagrant are synonyms defined as:

aimless and vagrant: continually changing especially as from one abode or occupation to another

Other synonyms of aimless include drifting, floating, vagabond.

aimless (noun)	vagrant (noun)
	a wanderer who has no established residence or visible means of support

aimless (adjective)	vagrant (adjective)
aimlessly drifting	continually changing especially as from one abode or occupation to another
continually changing especially as from one abode or occupation to another