genus Euphorbia vs spurge family

genus Euphorbia and spurge family both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Euphorbia	Yes	No	No	No
spurge family	Yes	No	No	No

genus Euphorbia (noun)	spurge family (noun)
type genus of the Euphorbiaceae: very large genus of diverse plants all having milky juice	a family of plants of order Geraniales