collider vs atom smasher

collider and atom smasher both are nouns.

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

As nouns, atom smasher is a hypernym of collider; that is, atom smasher is a word with a broader meaning than collider:

collider: an accelerator in which two beams of particles are forced to collide head on
atom smasher: a scientific instrument that increases the kinetic energy of charged particles

Other hypernyms of collider include accelerator, particle accelerator.

collider (noun)	atom smasher (noun)
an accelerator in which two beams of particles are forced to collide head on	a scientific instrument that increases the kinetic energy of charged particles