cow parsnip vs Heracleum sphondylium

cow parsnip and Heracleum sphondylium both are nouns.

Word	Noun	Adjective	Verb	Adverb
cow parsnip	Yes	No	No	No
Heracleum sphondylium	Yes	No	No	No

As nouns, cow parsnip and Heracleum sphondylium are synonyms defined as:

cow parsnip and Heracleum sphondylium: tall coarse plant having thick stems and cluster of white to purple flowers

Other synonyms of cow parsnip include hogweed.

cow parsnip (noun)	Heracleum sphondylium (noun)
tall coarse plant having thick stems and cluster of white to purple flowers	tall coarse plant having thick stems and cluster of white to purple flowers