chemical science vs acid

chemical science and acid both are nouns.

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

chemical science (noun)	acid (noun)
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions	street name for lysergic acid diethylamide
	any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt

chemical science (adjective)	acid (adjective)
	having the characteristics of an acid
	being sour to the taste
	harsh or corrosive in tone