field lupine vs Lupinus albus

field lupine and Lupinus albus both are nouns.

Word	Noun	Adjective	Verb	Adverb
field lupine	Yes	No	No	No
Lupinus albus	Yes	No	No	No

As nouns, field lupine and Lupinus albus are synonyms defined as:

field lupine and Lupinus albus: white-flowered Eurasian herb widely cultivated for forage and erosion control

Other synonyms of field lupine include Egyptian lupine, white lupine, wolf bean.

field lupine (noun)	Lupinus albus (noun)
white-flowered Eurasian herb widely cultivated for forage and erosion control	white-flowered Eurasian herb widely cultivated for forage and erosion control