war vs blitzkrieg

war and blitzkrieg both are nouns.

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

As verbs, blitzkrieg is a hyponym of war; that is, blitzkrieg is a word with a more specific, narrower meaning than war:

Other hyponyms of war include go to war, take arms, take up arms.

war (noun)	blitzkrieg (noun)
the waging of armed conflict against an enemy	a swift and violent military offensive with intensive aerial bombardment
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

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