family Asteraceae vs genus Xeranthemum

family Asteraceae and genus Xeranthemum both are nouns.

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

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