re-arm vs fortify

re-arm and fortify both are verbs.

Word	Noun	Adjective	Verb	Adverb
re-arm	No	No	Yes	No
fortify	No	No	Yes	No

As verbs, fortify is a hypernym of re-arm; that is, fortify is a word with a broader meaning than re-arm:

Other hypernyms of re-arm include arm, build up, gird.

re-arm (verb)	fortify (verb)
arm anew	add alcohol to (beverages)
	make strong or stronger
	add nutrients to
	prepare oneself for a military confrontation
	enclose by or as if by a fortification