break up vs chop

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

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

break up (noun)	chop (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)

break up (verb)	chop (verb)
laugh unrestrainedly	hit sharply
break or cause to break into pieces	cut with a hacking tool
come to an end	cut into pieces with repeated blows
separate (substances) into constituent elements or parts	strike sharply, as in some sports
cause to go into a solution	form or shape by chopping
cause to separate	move suddenly
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