atomize vs break up

atomize and break up both are verbs.

As verbs, break up is a hypernym of atomize; that is, break up is a word with a broader meaning than atomize:

Other hypernyms of atomize include fragment, fragmentise, fragmentize.

atomize (verb)	break up (verb)
spray very finely	to cause to separate and go in different directions
strike at with firepower or bombs	discontinue an association or relation; go different ways
break up into small particles	disband
	break violently or noisily; smash
	make a break in
	cause to go into a solution
	suffer a nervous breakdown
	take apart into its constituent pieces
	destroy the completeness of a set of related items
	set or keep apart
	attack with or as if with a pickaxe of ice or rocky ground, for example
	release ice
	close at the end of a session
	bring the association of to an end or cause to break up
	come to an end
	break or cause to break into pieces
	cause to separate
	separate (substances) into constituent elements or parts
	laugh unrestrainedly