exact vs exaction

exact is not a noun while exaction is a noun.

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

exact (noun)	exaction (noun)
	act of demanding or levying by force or authority

exact (adjective)	exaction (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)	exaction (verb)
claim as due or just
take as an undesirable consequence of some event or state of affairs