family Compositae vs genus Senecio

family Compositae and genus Senecio both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Compositae	Yes	No	No	No
genus Senecio	Yes	No	No	No

family Compositae (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