whitefish vs whitefish

whitefish and whitefish both are nouns.

Word	Noun	Adjective	Verb	Adverb
whitefish	Yes	No	No	No
whitefish	Yes	No	No	No

whitefish (noun)	whitefish (noun)
silvery herring-like freshwater food fish of cold lakes of the Northern Hemisphere	silvery herring-like freshwater food fish of cold lakes of the Northern Hemisphere
flesh of salmon-like or trout-like cold-water fish of cold lakes of the Northern Hemisphere	flesh of salmon-like or trout-like cold-water fish of cold lakes of the Northern Hemisphere
any market fish--edible saltwater fish or shellfish--except herring	any market fish--edible saltwater fish or shellfish--except herring