estate car vs beach wagon

estate car and beach wagon both are nouns.

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

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

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

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

estate car (noun)	beach wagon (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