summer sweet vs white alder

summer sweet and white alder both are nouns.

Word	Noun	Adjective	Verb	Adverb
summer sweet	Yes	No	No	No
white alder	Yes	No	No	No

As nouns, summer sweet and white alder are synonyms defined as:

summer sweet and white alder: shrub of eastern and southern coastal United States having beautiful racemes of spice-scented white flowers

Other synonyms of summer sweet include Clethra alnifolia, pepper bush, sweet pepperbush.

summer sweet (noun)	white alder (noun)
shrub of eastern and southern coastal United States having beautiful racemes of spice-scented white flowers	tree of western United States
	shrub of eastern and southern coastal United States having beautiful racemes of spice-scented white flowers