give up vs sell out

give up and sell out both are verbs.

Word	Noun	Adjective	Verb	Adverb
give up	No	No	Yes	No
sell out	No	No	Yes	No

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

give up (verb)	sell out (verb)
stop maintaining or insisting on; of ideas or claims	abandon one's principles for expedience or financial gain
give up in the face of defeat of lacking hope; admit defeat	sell or get rid of all one's merchandise
give up or agree to forgo to the power or possession of another
stop consuming
give up with the intent of never claiming again
relinquish possession or control over
lose (something) or lose the right to (something) by some error, offense, or crime
part with a possession or right
give up what is not strictly needed
allow the other (baseball) team to score
leave (a job, post, or position) voluntarily
put an end to a state or an activity