genus Tithonia vs family Asteraceae

genus Tithonia and family Asteraceae both are nouns.

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

genus Tithonia (noun)	family Asteraceae (noun)
genus of robust herbs of Mexico and Central America: Mexican sunflower	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia