comfrey vs cumfrey

comfrey and cumfrey both are nouns.

Word	Noun	Adjective	Verb	Adverb
comfrey	Yes	No	No	No
cumfrey	Yes	No	No	No

As nouns, comfrey and cumfrey are synonyms defined as:

comfrey and cumfrey: perennial herbs of Europe and Iran; make rapidly growing groundcover for shaded areas

comfrey (noun)	cumfrey (noun)
leaves make a popular tisane; young leaves used in salads or cooked	perennial herbs of Europe and Iran; make rapidly growing groundcover for shaded areas
perennial herbs of Europe and Iran; make rapidly growing groundcover for shaded areas