defend vs argue

defend and argue both are verbs.

Word	Noun	Adjective	Verb	Adverb
defend	No	No	Yes	No
argue	No	No	Yes	No

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

Other hypernyms of defend include reason.

defend (verb)	argue (verb)
argue or speak in defense of	have an argument about something
state or assert	give evidence of
be on the defensive; act against an attack	present reasons and arguments
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