genus Chamaemelum vs family Compositae

genus Chamaemelum and family Compositae both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Chamaemelum	Yes	No	No	No
family Compositae	Yes	No	No	No

genus Chamaemelum (noun)	family Compositae (noun)
small genus of plants sometimes included in genus Anthemis: chamomile	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia