Amorpha californica vs amorpha

Amorpha californica and amorpha both are nouns.

Word	Noun	Adjective	Verb	Adverb
Amorpha californica	Yes	No	No	No
amorpha	Yes	No	No	No

As nouns, amorpha is a hypernym of Amorpha californica; that is, amorpha is a word with a broader meaning than Amorpha californica:

Amorpha californica: an erect to spreading hairy shrub of the Pacific coast of the United States having racemes of red to indigo flowers
amorpha: any plant of the genus Amorpha having odd-pinnate leaves and purplish spicate flowers

Amorpha californica (noun)	amorpha (noun)
an erect to spreading hairy shrub of the Pacific coast of the United States having racemes of red to indigo flowers	any plant of the genus Amorpha having odd-pinnate leaves and purplish spicate flowers