stockfish vs fish

stockfish and fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
stockfish	Yes	No	No	No
fish	Yes	No	Yes	No

As nouns, fish is a hypernym of stockfish; that is, fish is a word with a broader meaning than stockfish:

stockfish (noun)	fish (noun)
fish cured by being split and air-dried without salt	any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills
	the flesh of fish used as food

stockfish (verb)	fish (verb)
	catch or try to catch fish or shellfish
	seek indirectly