family Asteraceae vs Ambrosiaceae

family Asteraceae and Ambrosiaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Asteraceae	Yes	No	No	No
Ambrosiaceae	Yes	No	No	No

family Asteraceae (noun)	Ambrosiaceae (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	in some classifications considered a separate family comprising a subgroup of the Compositae including the ragweeds