burn up vs expend

burn up and expend both are verbs.

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

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

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

burn up (verb)	expend (verb)
burn completely; be consumed or destroyed by fire	use up (resources or materials)
use up (energy)	pay out
burn brightly