Asteraceae vs genus Senecio

Asteraceae and genus Senecio both are nouns.

Word	Noun	Adjective	Verb	Adverb
Asteraceae	Yes	No	No	No
genus Senecio	Yes	No	No	No

Asteraceae (noun)	genus Senecio (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	enormous and diverse cosmopolitan genus of trees and shrubs and vines and herbs including many weeds