roll up vs stash away

roll up and stash away both are verbs.

Word	Noun	Adjective	Verb	Adverb
roll up	No	No	Yes	No
stash away	No	No	Yes	No

As verbs, stash away is a hypernym of roll up; that is, stash away is a word with a broader meaning than roll up:

Other hypernyms of roll up include hive away, lay in, put in, salt away, stack away, store.

roll up (verb)	stash away (verb)
form a cylinder by rolling	keep or lay aside for future use
form into a cylinder by rolling
show certain properties when being rolled
make into a bundle
close (a car window) by causing it to move up, as with a handle
arrive in a vehicle:
get or gather together