purple loco vs locoweed

purple loco and locoweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
purple loco	Yes	No	No	No
locoweed	Yes	No	No	No

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

purple loco: tufted locoweed of southwestern United States having purple or pink to white flowers
locoweed: any of several leguminous plants of western North America causing locoism in livestock

Other hypernyms of purple loco include crazy weed, crazyweed.

purple loco (noun)	locoweed (noun)
tufted locoweed of southwestern United States having purple or pink to white flowers	street names for marijuana
	any of several leguminous plants of western North America causing locoism in livestock