family Asteraceae vs genus Santolina

family Asteraceae and genus Santolina both are nouns.

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

family Asteraceae (noun)	genus Santolina (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	genus of Mediterranean subshrubs with rayless flower heads