marmalade orange vs orange tree

marmalade orange and orange tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
marmalade orange	Yes	No	No	No
orange tree	Yes	No	No	No

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

marmalade orange: any of various common orange trees yielding sour or bitter fruit; used as grafting stock
orange tree: any citrus tree bearing oranges

Other hypernyms of marmalade orange include orange.

marmalade orange (noun)	orange tree (noun)
any of various common orange trees yielding sour or bitter fruit; used as grafting stock	any citrus tree bearing oranges