calpac vs calpack

calpac and calpack both are nouns.

Word	Noun	Adjective	Verb	Adverb
calpac	Yes	No	No	No
calpack	Yes	No	No	No

As nouns, calpac and calpack are synonyms defined as:

calpac and calpack: a high-crowned black cap (usually made of felt or sheepskin) worn by men in Turkey and Iran and the Caucasus

Other synonyms of calpac include kalpac.

calpac (noun)	calpack (noun)
a high-crowned black cap (usually made of felt or sheepskin) worn by men in Turkey and Iran and the Caucasus	a high-crowned black cap (usually made of felt or sheepskin) worn by men in Turkey and Iran and the Caucasus