burnt vs burnt-out

burnt and burnt-out both are adjectives.

Word	Noun	Adjective	Verb	Adverb
burnt	No	Yes	No	No
burnt-out	No	Yes	No	No

As adjectives, burnt and burnt-out are synonyms defined as:

Other synonyms of burnt include burned-out, burned-over, burned.

burnt (adjective)	burnt-out (adjective)
ruined by overcooking	destroyed or badly damaged by fire
destroyed or badly damaged by fire	exhausted as a result of longtime stress
treated by heating to a high temperature but below the melting or fusing point	inoperative as a result of heat or friction