whitlavia vs scorpion weed

whitlavia and scorpion weed both are nouns.

Word	Noun	Adjective	Verb	Adverb
whitlavia	Yes	No	No	No
scorpion weed	Yes	No	No	No

As nouns, scorpion weed is a hypernym of whitlavia; that is, scorpion weed is a word with a broader meaning than whitlavia:

whitlavia: desert plant of southern California with blue or violet tubular flowers in terminal racemes
scorpion weed: any plant of the genus Phacelia

Other hypernyms of whitlavia include phacelia, scorpionweed.

whitlavia (noun)	scorpion weed (noun)
desert plant of southern California with blue or violet tubular flowers in terminal racemes	any plant of the genus Phacelia