chemical science vs fractionate

chemical science is a noun but fractionate is not a noun.

Word	Noun	Adjective	Verb	Adverb
chemical science	Yes	No	No	No
fractionate	No	No	Yes	No

chemical science (noun)	fractionate (noun)
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

chemical science (verb)	fractionate (verb)
	obtain by a fractional process
	separate into constituents or fractions containing concentrated constituents