genus Tragopogon vs Compositae

genus Tragopogon and Compositae both are nouns.

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

genus Tragopogon (noun)	Compositae (noun)
genus of Old World herbs with linear entire leaves and yellow or purple flower heads	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia