ruggelach vs pastry

ruggelach and pastry both are nouns.

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

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

ruggelach: pastry made with a cream cheese dough and different fillings (as raisins and walnuts and cinnamon or chocolate and walnut and apricot preserves)
pastry: any of various baked foods made of dough or batter

ruggelach (noun)	pastry (noun)
pastry made with a cream cheese dough and different fillings (as raisins and walnuts and cinnamon or chocolate and walnut and apricot preserves)	any of various baked foods made of dough or batter
	a dough of flour and water and shortening