Jaffa orange vs sweet orange

Jaffa orange and sweet orange both are nouns.

Word	Noun	Adjective	Verb	Adverb
Jaffa orange	Yes	No	No	No
sweet orange	Yes	No	No	No

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

Jaffa orange (noun)	sweet orange (noun)
sweet almost seedless orange of Israel	orange with sweet juicy pulp; often has a thin skin
	probably native to southern China; widely cultivated as source of table and juice oranges