wolf's milk vs leafy spurge

wolf's milk and leafy spurge both are nouns.

Word	Noun	Adjective	Verb	Adverb
wolf's milk	Yes	No	No	No
leafy spurge	Yes	No	No	No

As nouns, wolf's milk and leafy spurge are synonyms defined as:

wolf's milk and leafy spurge: tall European perennial naturalized and troublesome as a weed in eastern North America

Other synonyms of wolf's milk include Euphorbia esula.

wolf's milk (noun)	leafy spurge (noun)
tall European perennial naturalized and troublesome as a weed in eastern North America	tall European perennial naturalized and troublesome as a weed in eastern North America