appeals board vs appeal board

appeals board and appeal board both are nouns.

Word	Noun	Adjective	Verb	Adverb
appeals board	Yes	No	No	No
appeal board	Yes	No	No	No

As nouns, appeals board and appeal board are synonyms defined as:

appeals board and appeal board: a board of officials that are not judicial but are appointed to hear appeals

Other synonyms of appeals board include board of appeals.

appeals board (noun)	appeal board (noun)
a board of officials that are not judicial but are appointed to hear appeals	a board of officials that are not judicial but are appointed to hear appeals