panzer vs tank

panzer and tank both are nouns.

Word	Noun	Adjective	Verb	Adverb
panzer	Yes	No	No	No
tank	Yes	No	Yes	No

As nouns, tank is a hypernym of panzer; that is, tank is a word with a broader meaning than panzer:

panzer: an armored vehicle or tank
tank: an enclosed armored military vehicle; has a cannon and moves on caterpillar treads

Other hypernyms of panzer include armored combat vehicle, armoured combat vehicle, army tank.

panzer (noun)	tank (noun)
an armored vehicle or tank	a large (usually metallic) vessel for holding gases or liquids
	an enclosed armored military vehicle; has a cannon and moves on caterpillar treads
	a freight car that transports liquids or gases in bulk
	a cell for violent prisoners
	as much as a tank will hold

panzer (verb)	tank (verb)
	treat in a tank
	consume excessive amounts of alcohol
	store in a tank by causing (something) to flow into it