leafy spurge vs Euphorbia esula

leafy spurge and Euphorbia esula both are nouns.

Word	Noun	Adjective	Verb	Adverb
leafy spurge	Yes	No	No	No
Euphorbia esula	Yes	No	No	No

As nouns, leafy spurge and Euphorbia esula are synonyms defined as:

leafy spurge and Euphorbia esula: tall European perennial naturalized and troublesome as a weed in eastern North America

Other synonyms of leafy spurge include wolf's milk.

leafy spurge (noun)	Euphorbia esula (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