family Asteraceae vs genus Layia

family Asteraceae and genus Layia both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Asteraceae	Yes	No	No	No
genus Layia	Yes	No	No	No

family Asteraceae (noun)	genus Layia (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of western United States annuals with showy yellow or white flowers