family Compositae vs genus Encelia

family Compositae and genus Encelia both are nouns.

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

family Compositae (noun)	genus Encelia (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of shrubs of southwestern United States and Mexico: brittlebush