exact vs involve

exact is an adjective but involve is not an adjective.

Word	Noun	Adjective	Verb	Adverb
exact	No	Yes	Yes	No
involve	No	No	Yes	No

As verbs, involve is a hypernym of exact; that is, involve is a word with a broader meaning than exact:

Other hypernyms of exact include ask, call for, demand, necessitate, need, postulate, require, take.

exact (adjective)	involve (adjective)
marked by strict and particular and complete accordance with fact
(of ideas, images, representations, expressions) characterized by perfect conformity to fact or truth; strictly correct
lacking compromising or mitigating elements

exact (verb)	involve (verb)
claim as due or just	make complex or intricate or complicated
take as an undesirable consequence of some event or state of affairs	occupy or engage the interest of
	have as a necessary feature
	connect closely and often incriminatingly
	contain as a part
	engage as a participant
	require as useful, just, or proper