gravy boat vs sauceboat

gravy boat and sauceboat both are nouns.

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

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

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

Other synonyms of gravy boat include boat, gravy holder.

gravy boat (noun)	sauceboat (noun)
a dish (often boat-shaped) for serving gravy or sauce	a dish (often boat-shaped) for serving gravy or sauce