go up vs crowd

go up is not a noun while crowd is a noun.

Word	Noun	Adjective	Verb	Adverb
go up	No	No	Yes	No
crowd	Yes	No	Yes	No

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

Other hyponyms of go up include drive up, bear down on, bear down upon, edge in, edge up, close, push.

go up (noun)	crowd (noun)
	a large number of things or people considered together
	an informal body of friends

go up (verb)	crowd (verb)
increase in value or to a higher point	to gather together in large numbers
burn completely; be consumed or destroyed by fire	cause to herd, drive, or crowd together
move upward	approach a certain age or speed
go upward with gradual or continuous progress	fill or occupy to the point of overflowing
be erected, built, or constructed
move towards
travel up