dough vs pastry

dough and pastry both are nouns.

Word	Noun	Adjective	Verb	Adverb
dough	Yes	No	No	No
pastry	Yes	No	No	No

As nouns, pastry is a hyponym of dough; that is, pastry is a word with a more specific, narrower meaning than dough:

Other hyponyms of dough include pastry dough, bread dough, yeast dough.

dough (noun)	pastry (noun)
a flour mixture stiff enough to knead or roll	any of various baked foods made of dough or batter
informal terms for money	a dough of flour and water and shortening