part vs break up

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

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

As verbs, break up is a hyponym of part; that is, break up is a word with a more specific, narrower meaning than part:

As verbs, break up is a hyponym of part; that is, break up is a word with a more specific, narrower meaning than part:

As verbs, break up is a hyponym of part; that is, break up is a word with a more specific, narrower meaning than part:

Other hyponyms of part include disperse, dissipate, scatter, spread out, diffract.

As verbs, part and break up are synonyms defined as:

part and break up: discontinue an association or relation; go different ways

Other synonyms of part include break, separate, split, split up.

part (noun)	break up (noun)
the actions and activities assigned to or required or expected of a person or group
the effort contributed by a person in bringing about a result
something less than the whole of a human artifact
an item that is an instance of some type
a line of scalp that can be seen when sections of hair are combed in opposite directions
one of the portions into which something is regarded as divided and which together constitute a whole
an actor's portrayal of someone in a play
that which concerns a person with regard to a particular role or situation
the melody carried by a particular voice or instrument in polyphonic music
the extended spatial location of something
a portion of a natural object
assets belonging to or due to or contributed by an individual person or group
something determined in relation to something that includes it

part (verb)	break up (verb)
move or break apart	laugh unrestrainedly
force, take, or pull apart	break or cause to break into pieces
depart for someplace	come to an end
go one's own way; move apart	separate (substances) into constituent elements or parts
discontinue an association or relation; go different ways	cause to go into a solution
	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

part (adverb)	break up (adverb)
to some extent; in some degree; not wholly