chemistry vs accelerator

chemistry and accelerator both are nouns.

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

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