burn off vs expend

burn off and expend both are verbs.

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

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

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

burn off (verb)	expend (verb)
clear land of its vegetation by burning it off	use up (resources or materials)
use up (energy)	pay out