family Asteraceae vs genus Seriphidium

family Asteraceae and genus Seriphidium both are nouns.

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

family Asteraceae (noun)	genus Seriphidium (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	woody plants grown chiefly for their silver or grey and often aromatic foliage; formerly included in the genus Artemisia