meat pie vs kidney pie

meat pie and kidney pie both are nouns.

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

As nouns, kidney pie is a hyponym of meat pie; that is, kidney pie is a word with a more specific, narrower meaning than meat pie:

meat pie: pie made with meat or fowl enclosed in pastry or covered with pastry or biscuit dough
kidney pie: like steak and kidney pie but without steak

Other hyponyms of meat pie include pasty, tourtiere, shepherd's pie, steak and kidney pie.

meat pie (noun)	kidney pie (noun)
pie made with meat or fowl enclosed in pastry or covered with pastry or biscuit dough	like steak and kidney pie but without steak