vacant vs mindless

vacant and mindless both are adjectives.

Word	Noun	Adjective	Verb	Adverb
vacant	No	Yes	No	No
mindless	No	Yes	No	No

As adjectives, vacant and mindless are synonyms defined as:

Other synonyms of vacant include vacuous.

vacant (adjective)	mindless (adjective)
without an occupant or incumbent	not mindful or attentive
devoid of intelligence or thought	devoid of intelligence or thought
	lacking the thinking capacity characteristic of a conscious being
	requiring little mental effort
	not marked by the use of reason