fish filet vs fish fillet

fish filet and fish fillet both are nouns.

Word	Noun	Adjective	Verb	Adverb
fish filet	Yes	No	No	No
fish fillet	Yes	No	No	No

As nouns, fish filet and fish fillet are synonyms defined as:

fish filet and fish fillet: a longitudinal slice or boned side of a fish

Other synonyms of fish filet include filet, fillet.

fish filet (noun)	fish fillet (noun)
a longitudinal slice or boned side of a fish	a longitudinal slice or boned side of a fish