blackheart vs oxheart

blackheart and oxheart both are nouns.

Word	Noun	Adjective	Verb	Adverb
blackheart	Yes	No	No	No
oxheart	Yes	No	No	No

As nouns, oxheart is a hypernym of blackheart; that is, oxheart is a word with a broader meaning than blackheart:

Other hypernyms of blackheart include heart cherry, oxheart cherry.

blackheart (noun)	oxheart (noun)
heart cherry with dark flesh and skin	large heart-shaped sweet cherry with soft flesh
any of various diseases in which the central tissues blacken	any of several cultivated sweet cherries having sweet juicy heart-shaped fruits