police cruiser vs squad car

police cruiser and squad car both are nouns.

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

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

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

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

police cruiser (noun)	squad car (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