genus Xeranthemum vs Asteraceae

genus Xeranthemum and Asteraceae both are nouns.

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

genus Xeranthemum (noun)	Asteraceae (noun)
genus of annual densely hairy herbs of Mediterranean to southwestern Asia	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia