station wagon vs estate car

station wagon and estate car both are nouns.

Word	Noun	Adjective	Verb	Adverb
station wagon	Yes	No	No	No
estate car	Yes	No	No	No

As nouns, station wagon and estate car are synonyms defined as:

station wagon and estate car: a car that has a long body and rear door with space behind rear seat

Other synonyms of station wagon include beach waggon, beach wagon, station waggon, waggon, wagon.

station wagon (noun)	estate car (noun)
a car that has a long body and rear door with space behind rear seat	a car that has a long body and rear door with space behind rear seat