panda car vs police car

panda car and police car both are nouns.

Word	Noun	Adjective	Verb	Adverb
panda car	Yes	No	No	No
police car	Yes	No	No	No

As nouns, police car is a hypernym of panda car; that is, police car is a word with a broader meaning than panda car:

panda car: a police cruiser
police car: a car in which policemen cruise the streets; equipped with radiotelephonic communications to headquarters

Other hypernyms of panda car include cruiser, patrol car, police cruiser, prowl car, squad car.

panda car (noun)	police car (noun)
a police cruiser	a car in which policemen cruise the streets; equipped with radiotelephonic communications to headquarters