fesse vs fess

fesse and fess both are nouns.

Word	Noun	Adjective	Verb	Adverb
fesse	Yes	No	No	No
fess	Yes	No	No	No

As nouns, fesse and fess are synonyms defined as:

fesse and fess: (heraldry) an ordinary consisting of a broad horizontal band across a shield

fesse (noun)	fess (noun)
(heraldry) an ordinary consisting of a broad horizontal band across a shield	(heraldry) an ordinary consisting of a broad horizontal band across a shield