family Compositae vs genus Engelmannia

family Compositae and genus Engelmannia both are nouns.

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

family Compositae (noun)	genus Engelmannia (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	one species: North American herbs that resemble sunflowers