family Gramineae vs Saccharum

family Gramineae and Saccharum both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Gramineae	Yes	No	No	No
Saccharum	Yes	No	No	No

family Gramineae (noun)	Saccharum (noun)
the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane	tall perennial reedlike grass originally of southeastern Asia: sugarcane