burn up vs eat

burn up and eat both are verbs.

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

As verbs, eat is a hypernym of burn up; that is, eat is a word with a broader meaning than burn up:

Other hypernyms of burn up include consume, deplete, eat up, exhaust, expend, run through, use, use up, wipe out.

burn up (verb)	eat (verb)
burn completely; be consumed or destroyed by fire	cause to deteriorate due to the action of water, air, or an acid
use up (energy)	take in solid food
burn brightly	eat a meal; take a meal
	take in food; used of animals only
	use up (resources or materials)
	worry or cause anxiety in a persistent way