put away vs sell out

put away and sell out both are verbs.

Word	Noun	Adjective	Verb	Adverb
put away	No	No	Yes	No
sell out	No	No	Yes	No

As verbs, sell out is a hyponym of put away; that is, sell out is a word with a more specific, narrower meaning than put away:

put away (verb)	sell out (verb)
turn away from and put aside, perhaps temporarily	abandon one's principles for expedience or financial gain
eat up; usually refers to a considerable quantity of food	sell or get rid of all one's merchandise
kill gently, as with an injection
place in a place where something cannot be removed or someone cannot escape
stop using
throw or cast away
lock up or confine, in or as in a jail