estate car vs waggon

estate car and waggon both are nouns.

Word	Noun	Adjective	Verb	Adverb
estate car	Yes	No	No	No
waggon	Yes	No	No	No

As nouns, estate car and waggon are synonyms defined as:

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

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

estate car (noun)	waggon (noun)
a car that has a long body and rear door with space behind rear seat	any of various kinds of wheeled vehicles drawn by an animal or a tractor
	a car that has a long body and rear door with space behind rear seat