chemistry vs activity

chemistry and activity both are nouns.

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

chemistry (noun)	activity (noun)
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions	any specific behavior
the way two individuals relate to each other	the trait of being active; moving or acting rapidly and energetically
the chemical composition and properties of a substance or object	an organic process that takes place in the body
	a process existing in or produced by nature (rather than by the intent of human beings)
	the state of being active
	(chemistry) the capacity of a substance to take part in a chemical reaction