family Asteraceae vs genus Pyrethrum

family Asteraceae and genus Pyrethrum both are nouns.

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

family Asteraceae (noun)	genus Pyrethrum (noun)
plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia	used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum