Carolina lupine vs bush pea

Carolina lupine and bush pea both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carolina lupine	Yes	No	No	No
bush pea	Yes	No	No	No

As nouns, bush pea is a hypernym of Carolina lupine; that is, bush pea is a word with a broader meaning than Carolina lupine:

Carolina lupine: eastern United States bush pea
bush pea: any of various plants of the genus Thermopsis having trifoliate leaves and yellow or purple racemose flowers

Carolina lupine (noun)	bush pea (noun)
eastern United States bush pea	any of various plants of the genus Thermopsis having trifoliate leaves and yellow or purple racemose flowers