dough vs pastry dough

dough and pastry dough both are nouns.

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

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

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

dough (noun)	pastry dough (noun)
a flour mixture stiff enough to knead or roll	a dough of flour and water and shortening
informal terms for money