Papaver somniferum vs opium poppy

Papaver somniferum and opium poppy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Papaver somniferum	Yes	No	No	No
opium poppy	Yes	No	No	No

As nouns, Papaver somniferum and opium poppy are synonyms defined as:

Papaver somniferum and opium poppy: southwestern Asian herb with greyish leaves and white or reddish flowers; source of opium

Papaver somniferum (noun)	opium poppy (noun)
southwestern Asian herb with greyish leaves and white or reddish flowers; source of opium	southwestern Asian herb with greyish leaves and white or reddish flowers; source of opium