genus Cucurbita vs Cucurbita maxima turbaniformis

genus Cucurbita and Cucurbita maxima turbaniformis both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Cucurbita	Yes	No	No	No
Cucurbita maxima turbaniformis	Yes	No	No	No

genus Cucurbita (noun)	Cucurbita maxima turbaniformis (noun)
type genus of the Cucurbitaceae	squash plants bearing hard-shelled fruit shaped somewhat like a turban with a rounded central portion protruding from the end opposite the stem