gravy boat vs boat

gravy boat and boat both are nouns.

Word	Noun	Adjective	Verb	Adverb
gravy boat	Yes	No	No	No
boat	Yes	No	Yes	No

As nouns, gravy boat and boat are synonyms defined as:

gravy boat and boat: a dish (often boat-shaped) for serving gravy or sauce

Other synonyms of gravy boat include gravy holder, sauceboat.

gravy boat (noun)	boat (noun)
a dish (often boat-shaped) for serving gravy or sauce	a small vessel for travel on water
	a dish (often boat-shaped) for serving gravy or sauce

gravy boat (verb)	boat (verb)
	ride in a boat on water