salt away vs stack away

salt away and stack away both are verbs.

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

As verbs, salt away and stack away are synonyms defined as:

Other synonyms of salt away include hive away, lay in, put in, stash away, store.

salt away (verb)	stack away (verb)
keep or lay aside for future use	keep or lay aside for future use