family Graminaceae vs genus Dactyloctenium

family Graminaceae and genus Dactyloctenium both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Graminaceae	Yes	No	No	No
genus Dactyloctenium	Yes	No	No	No

family Graminaceae (noun)	genus Dactyloctenium (noun)
the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane	a monocotyledonous genus of the family Gramineae