vacate vs overturn

vacate is not a noun while overturn is a noun.

Word	Noun	Adjective	Verb	Adverb
vacate	No	No	Yes	No
overturn	Yes	No	Yes	No

As verbs, vacate and overturn are synonyms defined as:

Other synonyms of vacate include annul, countermand, lift, repeal, rescind, reverse, revoke.

vacate (noun)	overturn (noun)
	the act of upsetting something
	an improbable and unexpected victory

vacate (verb)	overturn (verb)
cancel officially	change radically
leave behind empty; move out of	rule against
leave (a job, post, or position) voluntarily	cancel officially
	turn from an upright or normal position
	cause to overturn from an upright or normal position
	cause the downfall of; of rulers