wagon vs coaster wagon

wagon and coaster wagon both are nouns.

Word	Noun	Adjective	Verb	Adverb
wagon	Yes	No	No	No
coaster wagon	Yes	No	No	No

As nouns, wagon and coaster wagon are synonyms defined as:

wagon and coaster wagon: a child's four-wheeled toy cart sometimes used for coasting

wagon (noun)	coaster wagon (noun)
any of various kinds of wheeled vehicles drawn by an animal or a tractor	a child's four-wheeled toy cart sometimes used for coasting
a car that has a long body and rear door with space behind rear seat
van used by police to transport prisoners
a child's four-wheeled toy cart sometimes used for coasting