wild sweet pea vs hoary pea

wild sweet pea and hoary pea both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild sweet pea	Yes	No	No	No
hoary pea	Yes	No	No	No

As nouns, hoary pea is a hypernym of wild sweet pea; that is, hoary pea is a word with a broader meaning than wild sweet pea:

wild sweet pea: perennial subshrub of eastern North America having downy leaves yellowish and rose flowers and; source of rotenone
hoary pea: a plant of the genus Tephrosia having pinnate leaves and white or purplish flowers and flat hairy pods

wild sweet pea (noun)	hoary pea (noun)
perennial subshrub of eastern North America having downy leaves yellowish and rose flowers and; source of rotenone	a plant of the genus Tephrosia having pinnate leaves and white or purplish flowers and flat hairy pods