family Compositae vs Ambrosiaceae

family Compositae and Ambrosiaceae both are nouns.

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

family Compositae (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