accelerator vs chemistry

accelerator and chemistry both are nouns.

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

accelerator (noun)	chemistry (noun)
a valve that regulates the supply of fuel to the engine	the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
a scientific instrument that increases the kinetic energy of charged particles	the way two individuals relate to each other
a pedal that controls the throttle valve	the chemical composition and properties of a substance or object
(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected