common comfrey vs boneset

common comfrey and boneset both are nouns.

Word	Noun	Adjective	Verb	Adverb
common comfrey	Yes	No	No	No
boneset	Yes	No	No	No

As nouns, common comfrey and boneset are synonyms defined as:

common comfrey and boneset: European herb having small white, pink or purple flowers; naturalized as a weed in North America

Other synonyms of common comfrey include Symphytum officinale.

common comfrey (noun)	boneset (noun)
European herb having small white, pink or purple flowers; naturalized as a weed in North America	perennial herb of southeastern United States having white-rayed flower heads; formerly used as in folk medicine
	European herb having small white, pink or purple flowers; naturalized as a weed in North America