stack away vs hive

stack away is not a noun while hive is a noun.

Word	Noun	Adjective	Verb	Adverb
stack away	No	No	Yes	No
hive	Yes	No	Yes	No

As verbs, hive is a hyponym of stack away; that is, hive is a word with a more specific, narrower meaning than stack away:

Other hyponyms of stack away include bin, computerise, computerize, victual, accumulate, amass, collect, compile, hoard, pile up, roll up.

stack away (noun)	hive (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

stack away (verb)	hive (verb)
keep or lay aside for future use	gather into a hive
	move together in a hive or as if in a hive
	store, like bees