rejuvenate vs river

rejuvenate is not a noun while river is a noun.

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

rejuvenate (noun)	river (noun)
	a large natural stream of water (larger than a creek)

rejuvenate (verb)	river (verb)
become young again
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