tart vs pastry

tart and pastry both are nouns.

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

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

tart (noun)	pastry (noun)
a small open pie with a fruit filling	any of various baked foods made of dough or batter
a pastry cup with a filling of fruit or custard and no top crust	a dough of flour and water and shortening
a woman who engages in sexual intercourse for money

tart (adjective)	pastry (adjective)
tasting sour like a lemon
harsh