black cherry vs oxheart

black cherry and oxheart both are nouns.

Word	Noun	Adjective	Verb	Adverb
black cherry	Yes	No	No	No
oxheart	Yes	No	No	No

As nouns, oxheart is a hyponym of black cherry; that is, oxheart is a word with a more specific, narrower meaning than black cherry:

black cherry: any of several fruits of cultivated cherry trees that have sweet flesh
oxheart: large heart-shaped sweet cherry with soft flesh

Other hyponyms of black cherry include bing cherry, heart cherry, oxheart cherry.

black cherry (noun)	oxheart (noun)
any of several fruits of cultivated cherry trees that have sweet flesh	large heart-shaped sweet cherry with soft flesh
large North American wild cherry with round black sour edible fruit	any of several cultivated sweet cherries having sweet juicy heart-shaped fruits