law of mass action vs chemistry

law of mass action and chemistry both are nouns.

Word	Noun	Adjective	Verb	Adverb
law of mass action	Yes	No	No	No
chemistry	Yes	No	No	No

law of mass action (noun)	chemistry (noun)
(chemistry) the law that states the following principle: the rate of a chemical reaction is directly proportional to the molecular concentrations of the reacting substances	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
	the way two individuals relate to each other
	the chemical composition and properties of a substance or object