call for vs exact

call for is not an adjective while exact is an adjective.

Word	Noun	Adjective	Verb	Adverb
call for	No	No	Yes	No
exact	No	Yes	Yes	No

As verbs, exact is a hyponym of call for; that is, exact is a word with a more specific, narrower meaning than call for:

Other hyponyms of call for include claim, take, govern, draw, cost, cry for, cry out for, compel.

call for (adjective)	exact (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

call for (verb)	exact (verb)
request the participation or presence of	claim as due or just
express the need or desire for	take as an undesirable consequence of some event or state of affairs
gather or collect
require as useful, just, or proper