swamp laurel vs bog laurel

swamp laurel and bog laurel both are nouns.

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

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

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

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

swamp laurel (noun)	bog 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