mockernut vs hickory tree

mockernut and hickory tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
mockernut	Yes	No	No	No
hickory tree	Yes	No	No	No

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

mockernut: smooth-barked North American hickory with 7 to 9 leaflets bearing a hard-shelled edible nut
hickory tree: American hardwood tree bearing edible nuts

Other hypernyms of mockernut include hickory.

mockernut (noun)	hickory tree (noun)
smooth-barked North American hickory with 7 to 9 leaflets bearing a hard-shelled edible nut	American hardwood tree bearing edible nuts