squad car vs panda car

squad car and panda car both are nouns.

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

As nouns, panda car is a hyponym of squad car; that is, panda car is a word with a more specific, narrower meaning than squad car:

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

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