meat pie vs pie

meat pie and pie both are nouns.

Word	Noun	Adjective	Verb	Adverb
meat pie	Yes	No	No	No
pie	Yes	No	No	No

As nouns, pie is a hypernym of meat pie; that is, pie is a word with a broader meaning than meat pie:

meat pie: pie made with meat or fowl enclosed in pastry or covered with pastry or biscuit dough
pie: dish baked in pastry-lined pan often with a pastry top

meat pie (noun)	pie (noun)
pie made with meat or fowl enclosed in pastry or covered with pastry or biscuit dough	dish baked in pastry-lined pan often with a pastry top