dickie-seat vs dickie

dickie-seat and dickie both are nouns.

Word	Noun	Adjective	Verb	Adverb
dickie-seat	Yes	No	No	No
dickie	Yes	No	No	No

As nouns, dickie-seat and dickie are synonyms defined as:

dickie-seat and dickie: a small third seat in the back of an old-fashioned two-seater

Other synonyms of dickie-seat include dickey-seat, dickey, dicky-seat, dicky.

dickie-seat (noun)	dickie (noun)
a small third seat in the back of an old-fashioned two-seater	a man's detachable insert (usually starched) to simulate the front of a shirt
	a small third seat in the back of an old-fashioned two-seater