family Asteraceae vs genus Serratula

family Asteraceae and genus Serratula both are nouns.

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

family Asteraceae (noun)	genus Serratula (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of Old World perennial herbs with spirally arranged toothed leaves