family Compositae vs genus Inula

family Compositae and genus Inula both are nouns.

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

family Compositae (noun)	genus Inula (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of Old World herbs or subshrubs: elecampane