spurge vs genus Euphorbia

spurge and genus Euphorbia both are nouns.

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

spurge (noun)	genus Euphorbia (noun)
any of numerous plants of the genus Euphorbia; usually having milky often poisonous juice	type genus of the Euphorbiaceae: very large genus of diverse plants all having milky juice