bog kalmia vs swamp laurel

bog kalmia and swamp laurel both are nouns.

Word	Noun	Adjective	Verb	Adverb
bog kalmia	Yes	No	No	No
swamp laurel	Yes	No	No	No

As nouns, bog kalmia and swamp laurel are synonyms defined as:

bog kalmia and swamp laurel: laurel of bogs of northwestern United States having small purple flowers and pale leaves that are glaucous beneath

Other synonyms of bog kalmia include bog laurel, Kalmia polifolia.

bog kalmia (noun)	swamp laurel (noun)
laurel of bogs of northwestern United States having small purple flowers and pale leaves that are glaucous beneath	laurel of bogs of northwestern United States having small purple flowers and pale leaves that are glaucous beneath
	shrub or small tree having rather small fragrant white flowers; abundant in southeastern United States