Papaver californicum vs western poppy

Papaver californicum and western poppy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Papaver californicum	Yes	No	No	No
western poppy	Yes	No	No	No

As nouns, Papaver californicum and western poppy are synonyms defined as:

Papaver californicum and western poppy: showy annual of California with red flowers

Papaver californicum (noun)	western poppy (noun)
showy annual of California with red flowers	showy annual of California with red flowers