activity vs chemistry

activity and chemistry both are nouns.

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

activity (noun)	chemistry (noun)
any specific behavior	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
the trait of being active; moving or acting rapidly and energetically	the way two individuals relate to each other
an organic process that takes place in the body	the chemical composition and properties of a substance or object
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