chilblains vs pernio

chilblains and pernio both are nouns.

Word	Noun	Adjective	Verb	Adverb
chilblains	Yes	No	No	No
pernio	Yes	No	No	No

As nouns, chilblains and pernio are synonyms defined as:

chilblains and pernio: inflammation of the hands and feet caused by exposure to cold and moisture

Other synonyms of chilblains include chilblain.

chilblains (noun)	pernio (noun)
inflammation of the hands and feet caused by exposure to cold and moisture	inflammation of the hands and feet caused by exposure to cold and moisture