Camassia quamash vs camas

Camassia quamash and camas both are nouns.

Word	Noun	Adjective	Verb	Adverb
Camassia quamash	Yes	No	No	No
camas	Yes	No	No	No

As nouns, camas is a hypernym of Camassia quamash; that is, camas is a word with a broader meaning than Camassia quamash:

Camassia quamash: plant having a large edible bulb and linear basal leaves and racemes of light to deep violet-blue star-shaped flowers on tall green scapes; western North America
camas: any of several plants of the genus Camassia; North and South America

Other hypernyms of Camassia quamash include camash, camass, camosh, quamash.

Camassia quamash (noun)	camas (noun)
plant having a large edible bulb and linear basal leaves and racemes of light to deep violet-blue star-shaped flowers on tall green scapes; western North America	any of several plants of the genus Camassia; North and South America