spurge family vs genus Euphorbia

spurge family and genus Euphorbia both are nouns.

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

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