family Compositae vs genus Helenium

family Compositae and genus Helenium both are nouns.

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

family Compositae (noun)	genus Helenium (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of American herbs with flowers having yellow rays: sneezeweeds