particle accelerator vs accelerator

particle accelerator and accelerator both are nouns.

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

As nouns, particle accelerator and accelerator are synonyms defined as:

particle accelerator and accelerator: a scientific instrument that increases the kinetic energy of charged particles

Other synonyms of particle accelerator include atom smasher.

particle accelerator (noun)	accelerator (noun)
a scientific instrument that increases the kinetic energy of charged particles	a valve that regulates the supply of fuel to the engine
	a scientific instrument that increases the kinetic energy of charged particles
	a pedal that controls the throttle valve
	(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected