blitzkrieg vs blitz

blitzkrieg and blitz both are nouns.

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

As nouns, blitzkrieg and blitz are synonyms defined as:

blitzkrieg and blitz: a swift and violent military offensive with intensive aerial bombardment

blitzkrieg (noun)	blitz (noun)
a swift and violent military offensive with intensive aerial bombardment	a swift and violent military offensive with intensive aerial bombardment
	(American football) defensive players try to break through the offensive line

blitzkrieg (verb)	blitz (verb)
fight a quick and surprising war	attack suddenly and without warning