common shiner vs silversides

common shiner and silversides both are nouns.

Word	Noun	Adjective	Verb	Adverb
common shiner	Yes	No	No	No
silversides	Yes	No	No	No

As nouns, common shiner and silversides are synonyms defined as:

Other synonyms of common shiner include Notropis cornutus.

common shiner (noun)	silversides (noun)
the common North American shiner	small fishes having a silver stripe along each side; abundant along the Atlantic coast of the United States
	the common North American shiner