Scrabble vs board game

Scrabble and board game both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scrabble	Yes	No	No	No
board game	Yes	No	No	No

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

Scrabble: a board game in which words are formed from letters in patterns similar to a crossword puzzle; each letter has a value and those values are used to score the game
board game: a game played on a specially designed board

Other hypernyms of Scrabble include word game.

Scrabble (noun)	board game (noun)
a board game in which words are formed from letters in patterns similar to a crossword puzzle; each letter has a value and those values are used to score the game	a game played on a specially designed board