pegboard vs gameboard

pegboard and gameboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
pegboard	Yes	No	No	No
gameboard	Yes	No	No	No

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

pegboard: a board perforated with regularly spaced holes into which pegs can be fitted
gameboard: a flat portable surface (usually rectangular) designed for board games

Other hypernyms of pegboard include board.

pegboard (noun)	gameboard (noun)
a board perforated with regularly spaced holes into which pegs can be fitted	a flat portable surface (usually rectangular) designed for board games