drive back vs defend

drive back and defend both are verbs.

Word	Noun	Adjective	Verb	Adverb
drive back	No	No	Yes	No
defend	No	No	Yes	No

As verbs, defend is a hypernym of drive back; that is, defend is a word with a broader meaning than drive back:

Other hypernyms of drive back include fight, fight back, fight down, oppose.

drive back (verb)	defend (verb)
force or drive back	argue or speak in defense of
	state or assert
	be on the defensive; act against an attack
	protect against a challenge or attack
	protect or fight for as a champion
	fight against or resist strongly
	be the defense counsel for someone in a trial