partridge pea vs subshrub

partridge pea and subshrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
partridge pea	Yes	No	No	No
subshrub	Yes	No	No	No

As nouns, subshrub is a hypernym of partridge pea; that is, subshrub is a word with a broader meaning than partridge pea:

partridge pea: tropical American plant having leaflets somewhat sensitive to the touch; sometimes placed in genus Cassia
subshrub: low-growing woody shrub or perennial with woody base

Other hypernyms of partridge pea include suffrutex.

partridge pea (noun)	subshrub (noun)
tropical American plant having leaflets somewhat sensitive to the touch; sometimes placed in genus Cassia	low-growing woody shrub or perennial with woody base