exigency vs exigent

exigency is a noun but exigent is not a noun.

Word	Noun	Adjective	Verb	Adverb
exigency	Yes	No	No	No
exigent	No	Yes	No	No

exigency (noun)	exigent (noun)
a sudden unforeseen crisis (usually involving danger) that requires immediate action
a pressing or urgent situation
that which is required in a particular situation —usually used in plural.

exigency (adjective)	exigent (adjective)
	requiring precise accuracy
	demanding attention