bluegill vs Lepomis macrochirus

bluegill and Lepomis macrochirus both are nouns.

Word	Noun	Adjective	Verb	Adverb
bluegill	Yes	No	No	No
Lepomis macrochirus	Yes	No	No	No

As nouns, bluegill and Lepomis macrochirus are synonyms defined as:

bluegill and Lepomis macrochirus: important edible sunfish of eastern and central United States

bluegill (noun)	Lepomis macrochirus (noun)
important edible sunfish of eastern and central United States	important edible sunfish of eastern and central United States