pep up vs invigorate

pep up and invigorate both are verbs.

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

As verbs, invigorate is a hypernym of pep up; that is, invigorate is a word with a broader meaning than pep up:

Other hypernyms of pep up include animate, enliven, liven, liven up.

pep up (verb)	invigorate (verb)
make more interesting or lively	impart vigor, strength, or vitality to
spur on or encourage especially by cheers and shouts	make lively
	give life or energy to
	heighten or intensify