Clethra alnifolia vs summer sweet

Clethra alnifolia and summer sweet both are nouns.

Word	Noun	Adjective	Verb	Adverb
Clethra alnifolia	Yes	No	No	No
summer sweet	Yes	No	No	No

As nouns, Clethra alnifolia and summer sweet are synonyms defined as:

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

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

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