mocassin vs moccasin

mocassin and moccasin both are nouns.

Word	Noun	Adjective	Verb	Adverb
mocassin	Yes	No	No	No
moccasin	Yes	No	No	No

As nouns, mocassin and moccasin are synonyms defined as:

mocassin and moccasin: soft leather shoe; originally worn by Native Americans

mocassin (noun)	moccasin (noun)
soft leather shoe; originally worn by Native Americans	soft leather shoe; originally worn by Native Americans