guanabana vs custard apple

guanabana and custard apple both are nouns.

Word	Noun	Adjective	Verb	Adverb
guanabana	Yes	No	No	No
custard apple	Yes	No	No	No

As nouns, custard apple is a hypernym of guanabana; that is, custard apple is a word with a broader meaning than guanabana:

guanabana: large spiny tropical fruit with tart pulp related to custard apples
custard apple: the fruit of any of several tropical American trees of the genus Annona having soft edible pulp

guanabana (noun)	custard apple (noun)
large spiny tropical fruit with tart pulp related to custard apples	the fruit of any of several tropical American trees of the genus Annona having soft edible pulp
	any of several tropical American trees bearing fruit with soft edible pulp