atom smasher vs accelerator

atom smasher and accelerator both are nouns.

Word	Noun	Adjective	Verb	Adverb
atom smasher	Yes	No	No	No
accelerator	Yes	No	No	No

As nouns, atom smasher and accelerator are synonyms defined as:

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

Other synonyms of atom smasher include particle accelerator.

atom smasher (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