hive vs hive up

hive is a noun but hive up is not a noun.

Word	Noun	Adjective	Verb	Adverb
hive	Yes	No	Yes	No
hive up	No	No	Yes	No

hive (noun)	hive up (noun)
a man-made receptacle that houses a swarm of bees
a teeming multitude
a structure that provides a natural habitation for bees; as in a hollow tree

hive (verb)	hive up (verb)
gather into a hive	save up as for future use
move together in a hive or as if in a hive
store, like bees