sergeant fish vs Rachycentron canadum

sergeant fish and Rachycentron canadum both are nouns.

Word	Noun	Adjective	Verb	Adverb
sergeant fish	Yes	No	No	No
Rachycentron canadum	Yes	No	No	No

As nouns, sergeant fish and Rachycentron canadum are synonyms defined as:

sergeant fish and Rachycentron canadum: large dark-striped tropical food and game fish related to remoras; found worldwide in coastal to open waters

Other synonyms of sergeant fish include cobia.

sergeant fish (noun)	Rachycentron canadum (noun)
large dark-striped tropical food and game fish related to remoras; found worldwide in coastal to open waters	large dark-striped tropical food and game fish related to remoras; found worldwide in coastal to open waters