blain vs pernio

blain and pernio both are nouns.

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

As nouns, pernio is a hyponym of blain; that is, pernio is a word with a more specific, narrower meaning than blain:

blain: an inflammatory swelling or sore
pernio: inflammation of the hands and feet caused by exposure to cold and moisture

Other hyponyms of blain include chilblain, chilblains.

blain (noun)	pernio (noun)
an inflammatory swelling or sore	inflammation of the hands and feet caused by exposure to cold and moisture