lock away vs shut away

lock away and shut away both are verbs.

Word	Noun	Adjective	Verb	Adverb
lock away	No	No	Yes	No
shut away	No	No	Yes	No

As verbs, lock away and shut away are synonyms defined as:

lock away and shut away: place in a place where something cannot be removed or someone cannot escape

Other synonyms of lock away include lock, lock in, lock up, put away, shut up.

lock away (verb)	shut away (verb)
place in a place where something cannot be removed or someone cannot escape	place in a place where something cannot be removed or someone cannot escape