genus Ursinia vs Asteraceae

genus Ursinia and Asteraceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Ursinia	Yes	No	No	No
Asteraceae	Yes	No	No	No

genus Ursinia (noun)	Asteraceae (noun)
genus of South African herbs and shrubs cultivated as ornamentals	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia