atom smasher vs particle accelerator

atom smasher and particle accelerator both are nouns.

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

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

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

Other synonyms of atom smasher include accelerator.

atom smasher (noun)	particle accelerator (noun)
a scientific instrument that increases the kinetic energy of charged particles	a scientific instrument that increases the kinetic energy of charged particles