chemical vs chemistry

chemical and chemistry both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemical	Yes	Yes	No	No
chemistry	Yes	No	No	No

chemical (noun)	chemistry (noun)
material produced by or used in a reaction involving changes in atoms or molecules	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

chemical (adjective)	chemistry (adjective)
relating to or used in chemistry
of or made from or using substances produced by or used in reactions involving atomic or molecular changes