acceptor vs chemical science

acceptor and chemical science both are nouns.

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

acceptor (noun)	chemical science (noun)
the person (or institution) who accepts a check or draft and becomes responsible for paying the party named in the draft when it matures	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
(chemistry) in the formation of a coordinate bond it is the compound to which electrons are donated