California poppy vs Eschscholtzia californica

California poppy and Eschscholtzia californica both are nouns.

Word	Noun	Adjective	Verb	Adverb
California poppy	Yes	No	No	No
Eschscholtzia californica	Yes	No	No	No

As nouns, California poppy and Eschscholtzia californica are synonyms defined as:

California poppy and Eschscholtzia californica: of Pacific coast of North America; widely cultivated for its yellow to red flowers

California poppy (noun)	Eschscholtzia californica (noun)
of Pacific coast of North America; widely cultivated for its yellow to red flowers	of Pacific coast of North America; widely cultivated for its yellow to red flowers