genus Liatris vs Compositae

genus Liatris and Compositae both are nouns.

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

genus Liatris (noun)	Compositae (noun)
genus of perennial North American herbs with aromatic usually cormous roots	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia