squad car vs police cruiser

squad car and police cruiser both are nouns.

Word	Noun	Adjective	Verb	Adverb
squad car	Yes	No	No	No
police cruiser	Yes	No	No	No

As nouns, squad car and police cruiser are synonyms defined as:

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

Other synonyms of squad car include cruiser, patrol car, police car, prowl car.

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