parsnip vs wild parsnip

parsnip and wild parsnip both are nouns.

Word	Noun	Adjective	Verb	Adverb
parsnip	Yes	No	No	No
wild parsnip	Yes	No	No	No

As nouns, wild parsnip is a hyponym of parsnip; that is, wild parsnip is a word with a more specific, narrower meaning than parsnip:

parsnip: a strong-scented plant cultivated for its edible root
wild parsnip: biennial weed in Europe and America having large pinnate leaves and yellow flowers and a bitter and somewhat poisonous root; the ancestor of cultivated parsnip

Other hyponyms of parsnip include cultivated parsnip, madnep.

parsnip (noun)	wild parsnip (noun)
whitish edible root; eaten cooked	biennial weed in Europe and America having large pinnate leaves and yellow flowers and a bitter and somewhat poisonous root; the ancestor of cultivated parsnip
a strong-scented plant cultivated for its edible root
the whitish root of cultivated parsnip