fish stick vs fish finger

fish stick and fish finger both are nouns.

Word	Noun	Adjective	Verb	Adverb
fish stick	Yes	No	No	No
fish finger	Yes	No	No	No

As nouns, fish stick and fish finger are synonyms defined as:

fish stick (noun)	fish finger (noun)
a long fillet of fish breaded and fried	a long fillet of fish breaded and fried