Pastinaca sativa vs parsnip

Pastinaca sativa and parsnip both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pastinaca sativa	Yes	No	No	No
parsnip	Yes	No	No	No

As nouns, Pastinaca sativa and parsnip are synonyms defined as:

Pastinaca sativa and parsnip: a strong-scented plant cultivated for its edible root

Pastinaca sativa (noun)	parsnip (noun)
a strong-scented plant cultivated for its edible root	whitish edible root; eaten cooked
	a strong-scented plant cultivated for its edible root
	the whitish root of cultivated parsnip