mazzard cherry vs sweet cherry

mazzard cherry and sweet cherry both are nouns.

Word	Noun	Adjective	Verb	Adverb
mazzard cherry	Yes	No	No	No
sweet cherry	Yes	No	No	No

As nouns, sweet cherry is a hypernym of mazzard cherry; that is, sweet cherry is a word with a broader meaning than mazzard cherry:

mazzard cherry: wild or seedling sweet cherry used as stock for grafting
sweet cherry: large Eurasian tree producing small dark bitter fruit in the wild but edible sweet fruit under cultivation

Other hypernyms of mazzard cherry include Prunus avium.

mazzard cherry (noun)	sweet cherry (noun)
wild or seedling sweet cherry used as stock for grafting	any of several fruits of cultivated cherry trees that have sweet flesh
	large Eurasian tree producing small dark bitter fruit in the wild but edible sweet fruit under cultivation