pastry board vs breadboard

pastry board and breadboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
pastry board	Yes	No	No	No
breadboard	Yes	No	No	No

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

pastry board: A big wooden board used for kneading dough.
breadboard: a wooden or plastic board on which dough is kneaded or bread is sliced

Other hypernyms of pastry board include bread board.

pastry board (noun)	breadboard (noun)
A big wooden board used for kneading dough.	a wooden or plastic board on which dough is kneaded or bread is sliced