summer cohosh vs American bugbane

summer cohosh and American bugbane both are nouns.

Word	Noun	Adjective	Verb	Adverb
summer cohosh	Yes	No	No	No
American bugbane	Yes	No	No	No

As nouns, summer cohosh and American bugbane are synonyms defined as:

summer cohosh and American bugbane: bugbane of the eastern United States having erect racemes of white flowers

Other synonyms of summer cohosh include Cimicifuga americana.

summer cohosh (noun)	American bugbane (noun)
bugbane of the eastern United States having erect racemes of white flowers	bugbane of the eastern United States having erect racemes of white flowers