genus Hazardia vs Compositae

genus Hazardia and Compositae both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Hazardia	Yes	No	No	No
Compositae	Yes	No	No	No

genus Hazardia (noun)	Compositae (noun)
small genus of shrubs and subshrubs of western United States having flowers that change color as they mature	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia