Compositae vs genus Tragopogon

Compositae and genus Tragopogon both are nouns.

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

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