hoard vs come up

hoard is a noun but come up is not a noun.

Word	Noun	Adjective	Verb	Adverb
hoard	Yes	No	Yes	No
come up	No	No	Yes	No

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

Other hyponyms of hoard include run up, corral, collect, pull in, scrape, scrape up, scratch, chunk, lump, bale, catch, fund, fund.

hoard (noun)	come up (noun)
a secret store of valuables or money

hoard (verb)	come up (verb)
get or gather together	result or issue
save up as for future use	start running, functioning, or operating
	gather or bring together
	gather (money or other resources) together over time
	bring forth, usually something desirable
	come up, of celestial bodies
	come to the surface
	move toward, travel toward something or somebody or approach something or somebody
	move upward
	get something or somebody for a specific purpose
	originate or come into being
	be mentioned