cribbage board vs gameboard

cribbage board and gameboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
cribbage board	Yes	No	No	No
gameboard	Yes	No	No	No

As nouns, gameboard is a hypernym of cribbage board; that is, gameboard is a word with a broader meaning than cribbage board:

cribbage board: a board with pegs and regularly spaced holes for holding the pegs; used for keeping the score in a game of cribbage
gameboard: a flat portable surface (usually rectangular) designed for board games

Other hypernyms of cribbage board include board.

cribbage board (noun)	gameboard (noun)
a board with pegs and regularly spaced holes for holding the pegs; used for keeping the score in a game of cribbage	a flat portable surface (usually rectangular) designed for board games