Zea vs Gramineae

Zea and Gramineae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Zea	Yes	No	No	No
Gramineae	Yes	No	No	No

Zea (noun)	Gramineae (noun)
corn	the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane