shako vs bearskin

shako and bearskin both are nouns.

Word	Noun	Adjective	Verb	Adverb
shako	Yes	No	No	No
bearskin	Yes	No	No	No

As nouns, shako and bearskin are synonyms defined as:

shako and bearskin: tall hat; worn by some British soldiers on ceremonial occasions

Other synonyms of shako include busby.

shako (noun)	bearskin (noun)
tall hat; worn by some British soldiers on ceremonial occasions	tall hat; worn by some British soldiers on ceremonial occasions
	the pelt of a bear