proliferate vs manifold

proliferate is not a noun while manifold is a noun.

Word	Noun	Adjective	Verb	Adverb
proliferate	No	No	Yes	No
manifold	Yes	Yes	Yes	No

As verbs, manifold is a hypernym of proliferate; that is, manifold is a word with a broader meaning than proliferate:

Other hypernyms of proliferate include multiply.

proliferate (noun)	manifold (noun)
	a pipe that has several lateral outlets to or from other pipes
	a set of points such as those of a closed surface or an analogue in three or more dimensions
	a lightweight paper used with carbon paper to make multiple copies

proliferate (adjective)	manifold (adjective)
	many and varied; having many features or forms

proliferate (verb)	manifold (verb)
grow rapidly	make multiple copies of
cause to grow or increase rapidly	combine or increase by multiplication