wartweed vs devil's milk

wartweed and devil's milk both are nouns.

Word	Noun	Adjective	Verb	Adverb
wartweed	Yes	No	No	No
devil's milk	Yes	No	No	No

As nouns, wartweed and devil's milk are synonyms defined as:

wartweed and devil's milk: not unattractive European weed whose flowers turn toward the sun

Other synonyms of wartweed include Euphorbia helioscopia, sun spurge, wartwort.

wartweed (noun)	devil's milk (noun)
not unattractive European weed whose flowers turn toward the sun	not unattractive European weed whose flowers turn toward the sun
	an Old World spurge introduced as a weed in the eastern United States