flame up vs burn up

flame up and burn up both are verbs.

Word	Noun	Adjective	Verb	Adverb
flame up	No	No	Yes	No
burn up	No	No	Yes	No

As verbs, flame up and burn up are synonyms defined as:

Other synonyms of flame up include blaze up, flare.

flame up (verb)	burn up (verb)
become ignited	burn completely; be consumed or destroyed by fire
burn brightly	use up (energy)
	burn brightly