purple locoweed vs purple loco

purple locoweed and purple loco both are nouns.

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

As nouns, purple locoweed and purple loco are synonyms defined as:

purple locoweed and purple loco: tufted locoweed of southwestern United States having purple or pink to white flowers

Other synonyms of purple locoweed include Oxytropis lambertii.

purple locoweed (noun)	purple loco (noun)
tufted locoweed of southwestern United States having purple or pink to white flowers	tufted locoweed of southwestern United States having purple or pink to white flowers