stash away vs collect

stash away is not a noun while collect is a noun.

Word	Noun	Adjective	Verb	Adverb
stash away	No	No	Yes	No
collect	Yes	Yes	Yes	Yes

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

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

stash away (noun)	collect (noun)
	a short prayer generally preceding the lesson in the Church of Rome or the Church of England

stash away (adjective)	collect (adjective)
	payable by the recipient on delivery

stash away (verb)	collect (verb)
keep or lay aside for future use	assemble or get together
	get or bring together
	get or gather together
	call for and obtain payment of
	gather or collect

stash away (adverb)	collect (adverb)
	make a telephone call or mail a package so that the recipient pays