genus Piqueria vs Compositae

genus Piqueria and Compositae both are nouns.

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

genus Piqueria (noun)	Compositae (noun)
small genus of tropical American perennial herbs or subshrubs with white to pale yellow flowers; often included in genus Stevia	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia