Euphorbia helioscopia vs spurge

Euphorbia helioscopia and spurge both are nouns.

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

As nouns, spurge is a hypernym of Euphorbia helioscopia; that is, spurge is a word with a broader meaning than Euphorbia helioscopia:

Euphorbia helioscopia: not unattractive European weed whose flowers turn toward the sun
spurge: any of numerous plants of the genus Euphorbia; usually having milky often poisonous juice

Euphorbia helioscopia (noun)	spurge (noun)
not unattractive European weed whose flowers turn toward the sun	any of numerous plants of the genus Euphorbia; usually having milky often poisonous juice