cajan pea vs shrub

cajan pea and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
cajan pea	Yes	No	No	No
shrub	Yes	No	No	No

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

cajan pea: tropical woody herb with showy yellow flowers and flat pods; much cultivated in the tropics
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of cajan pea include bush.

cajan pea (noun)	shrub (noun)
small highly nutritious seed of the tropical pigeon-pea plant	a low woody perennial plant usually having several major stems
tropical woody herb with showy yellow flowers and flat pods; much cultivated in the tropics