family Poaceae vs genus Sporobolus

family Poaceae and genus Sporobolus both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Poaceae	Yes	No	No	No
genus Sporobolus	Yes	No	No	No

family Poaceae (noun)	genus Sporobolus (noun)
the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane	cosmopolitan annual and perennial grasses (as dropseed or rush grass)