bicorned vs bicorn

bicorned is not a noun while bicorn is a noun.

Word	Noun	Adjective	Verb	Adverb
bicorned	No	Yes	No	No
bicorn	Yes	Yes	No	No

As adjectives, bicorned and bicorn are synonyms defined as:

Other synonyms of bicorned include bicornate, bicornuate, bicornuous.

bicorned (noun)	bicorn (noun)
	a cocked hat with the brim turned up to form two points

bicorned (adjective)	bicorn (adjective)
having two horns or horn-shaped parts	having two horns or horn-shaped parts