family Labiatae vs genus Marrubium

family Labiatae and genus Marrubium both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Labiatae	Yes	No	No	No
genus Marrubium	Yes	No	No	No

family Labiatae (noun)	genus Marrubium (noun)
a large family of aromatic herbs and shrubs having flowers resembling the lips of a mouth and four-lobed ovaries yielding four one-seeded nutlets and including mint, thyme, sage, rosemary	horehound (Marrubium)