locoweed vs leguminous plant

locoweed and leguminous plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
locoweed	Yes	No	No	No
leguminous plant	Yes	No	No	No

As nouns, leguminous plant is a hypernym of locoweed; that is, leguminous plant is a word with a broader meaning than locoweed:

locoweed: any of several leguminous plants of western North America causing locoism in livestock
leguminous plant: an erect or climbing bean or pea plant of the family Leguminosae

Other hypernyms of locoweed include legume.

locoweed (noun)	leguminous plant (noun)
street names for marijuana	an erect or climbing bean or pea plant of the family Leguminosae
any of several leguminous plants of western North America causing locoism in livestock