tart vs lobster tart

tart and lobster tart both are nouns.

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

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

Other hyponyms of tart include quiche, apple tart, tartlet.

tart (noun)	lobster tart (noun)
a small open pie with a fruit filling	a pastry shell filled with cooked lobster
a pastry cup with a filling of fruit or custard and no top crust
a woman who engages in sexual intercourse for money

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