burned-over vs burnt

burned-over and burnt both are adjectives.

Word	Noun	Adjective	Verb	Adverb
burned-over	No	Yes	No	No
burnt	No	Yes	No	No

As adjectives, burned-over and burnt are synonyms defined as:

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

burned-over (adjective)	burnt (adjective)
destroyed or badly damaged by fire	ruined by overcooking
	destroyed or badly damaged by fire
	treated by heating to a high temperature but below the melting or fusing point