kalmia vs bush

kalmia and bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
kalmia	Yes	No	No	No
bush	Yes	Yes	Yes	No

As nouns, bush is a hypernym of kalmia; that is, bush is a word with a broader meaning than kalmia:

Other hypernyms of kalmia include shrub.

kalmia (noun)	bush (noun)
any plant of the genus Kalmia	hair growing in the pubic area
	dense vegetation consisting of stunted trees or bushes
	a large wilderness area
	a low woody perennial plant usually having several major stems

kalmia (adjective)	bush (adjective)
	not of the highest quality or sophistication

kalmia (verb)	bush (verb)
	provide with a bushing