chop vs break up

chop is a noun but break up is not a noun.

Word	Noun	Adjective	Verb	Adverb
chop	Yes	No	Yes	No
break up	No	No	Yes	No

chop (noun)	break up (noun)
a tennis return made with a downward motion that puts backspin on the ball
a grounder that bounces high in the air
a jaw
a small cut of meat including part of a rib
the irregular motion of waves (usually caused by wind blowing in a direction opposite to the tide)

chop (verb)	break up (verb)
hit sharply	laugh unrestrainedly
cut with a hacking tool	break or cause to break into pieces
cut into pieces with repeated blows	come to an end
strike sharply, as in some sports	separate (substances) into constituent elements or parts
form or shape by chopping	cause to go into a solution
move suddenly	cause to separate
	close at the end of a session
	bring the association of to an end or cause to break up
	make a break in
	set or keep apart
	break violently or noisily; smash
	attack with or as if with a pickaxe of ice or rocky ground, for example
	release ice
	destroy the completeness of a set of related items
	take apart into its constituent pieces
	suffer a nervous breakdown
	disband
	to cause to separate and go in different directions
	discontinue an association or relation; go different ways