blitzkrieg vs war

blitzkrieg and war both are nouns.

Word	Noun	Adjective	Verb	Adverb
blitzkrieg	Yes	No	Yes	No
war	Yes	No	Yes	No

As verbs, war is a hypernym of blitzkrieg; that is, war is a word with a broader meaning than blitzkrieg:

blitzkrieg (noun)	war (noun)
a swift and violent military offensive with intensive aerial bombardment	the waging of armed conflict against an enemy
	a concerted campaign to end something that is injurious
	an active struggle between competing entities
	a legal state created by a declaration of war and ended by official declaration during which the international rules of war apply

blitzkrieg (verb)	war (verb)
fight a quick and surprising war	make or wage war