fish scale vs fish

fish scale and fish both are nouns.

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

fish scale (noun)	fish (noun)
scale of the kind that covers the bodies of fish	any of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills
	the flesh of fish used as food

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