reincarnate vs rejuvenate

reincarnate is an adjective but rejuvenate is not an adjective.

Word	Noun	Adjective	Verb	Adverb
reincarnate	No	Yes	Yes	No
rejuvenate	No	No	Yes	No

As verbs, rejuvenate is a hypernym of reincarnate; that is, rejuvenate is a word with a broader meaning than reincarnate:

reincarnate: cause to appear in a new form
rejuvenate: get or give new life or energy; return to life, regain energy, recuperate

Other hypernyms of reincarnate include regenerate, restore.

reincarnate (adjective)	rejuvenate (adjective)
having a new body

reincarnate (verb)	rejuvenate (verb)
cause to appear in a new form	become young again
be born anew in another body after death	make younger or more youthful
	develop youthful topographical features
	get or give new life or energy; return to life, regain energy, recuperate
	cause (a stream or river) to erode, as by an uplift of the land