reproduction vs reproduce

reproduction is a noun but reproduce is not a noun.

Word	Noun	Adjective	Verb	Adverb
reproduction	Yes	No	No	No
reproduce	No	No	Yes	No

reproduction (noun)	reproduce (noun)
the sexual activity of conceiving and bearing offspring
the act of making copies
copy that is not the original; something that has been copied
recall that is hypothesized to work by storing the original stimulus input and reproducing it during recall
the process of generating offspring

reproduction (verb)	reproduce (verb)
	have offspring or produce more individuals of a given animal or plant
	repeat after memorization
	make a copy or equivalent of
	recreate a sound, image, idea, mood, atmosphere, etc.