exact vs require

exact is an adjective but require is not an adjective.

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

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

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

exact (adjective)	require (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)	require (verb)
claim as due or just	make someone do something
take as an undesirable consequence of some event or state of affairs	consider obligatory; request and expect
	have need of
	require as useful, just, or proper