Camassia leichtlinii vs quamash

Camassia leichtlinii and quamash both are nouns.

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

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

Camassia leichtlinii: camas found to the west of Cascade Mountains
quamash: any of several plants of the genus Camassia; North and South America

Other hypernyms of Camassia leichtlinii include camas, camash, camass, camosh.

Camassia leichtlinii (noun)	quamash (noun)
camas found to the west of Cascade Mountains	any of several plants of the genus Camassia; North and South America