exhortation vs exhort

exhortation is a noun but exhort is not a noun.

Word	Noun	Adjective	Verb	Adverb
exhortation	Yes	No	No	No
exhort	No	No	Yes	No

exhortation (noun)	exhort (noun)
the act of exhorting; an earnest attempt at persuasion
a communication intended to urge or persuade the recipients to take some action

exhortation (verb)	exhort (verb)
	force or impel in an indicated direction
	spur on or encourage especially by cheers and shouts