multiply vs biological science

multiply is not a noun while biological science is a noun.

Word	Noun	Adjective	Verb	Adverb
multiply	No	No	Yes	Yes
biological science	Yes	No	No	No

multiply (noun)	biological science (noun)
	the science that studies living organisms

multiply (verb)	biological science (verb)
have young (animals) or reproduce (organisms)
have offspring or produce more individuals of a given animal or plant
combine or increase by multiplication
make multiple copies of
combine by multiplication

multiply (adverb)	biological science (adverb)
in several ways; in a multiple manner