patrol wagon vs paddy wagon

patrol wagon and paddy wagon both are nouns.

Word	Noun	Adjective	Verb	Adverb
patrol wagon	Yes	No	No	No
paddy wagon	Yes	No	No	No

As nouns, patrol wagon and paddy wagon are synonyms defined as:

Other synonyms of patrol wagon include black Maria, police van, police wagon, wagon.

patrol wagon (noun)	paddy wagon (noun)
van used by police to transport prisoners	van used by police to transport prisoners