station waggon vs station wagon

station waggon and station wagon both are nouns.

Word	Noun	Adjective	Verb	Adverb
station waggon	Yes	No	No	No
station wagon	Yes	No	No	No

As nouns, station waggon and station wagon are synonyms defined as:

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

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

station waggon (noun)	station 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