pep up vs exhort

pep up and exhort both are verbs.

Word	Noun	Adjective	Verb	Adverb
pep up	No	No	Yes	No
exhort	No	No	Yes	No

As verbs, pep up and exhort are synonyms defined as:

Other synonyms of pep up include barrack, cheer, inspire, root on, urge, urge on.

pep up (verb)	exhort (verb)
make more interesting or lively	force or impel in an indicated direction
spur on or encourage especially by cheers and shouts	spur on or encourage especially by cheers and shouts