patrol car vs squad car

patrol car and squad car both are nouns.

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

As nouns, patrol car and squad car are synonyms defined as:

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

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

patrol car (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