chemical science vs electronegativity

chemical science and electronegativity both are nouns.

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

chemical science (noun)	electronegativity (noun)
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions	(chemistry) the tendency of an atom or radical to attract electrons in the formation of an ionic bond