schoolmaster vs Lutjanus apodus

schoolmaster and Lutjanus apodus both are nouns.

Word	Noun	Adjective	Verb	Adverb
schoolmaster	Yes	No	No	No
Lutjanus apodus	Yes	No	No	No

As nouns, schoolmaster and Lutjanus apodus are synonyms defined as:

schoolmaster and Lutjanus apodus: food fish of warm Caribbean and Atlantic waters

schoolmaster (noun)	Lutjanus apodus (noun)
food fish of warm Caribbean and Atlantic waters	food fish of warm Caribbean and Atlantic waters
presiding officer of a school
any person (or institution) who acts as an educator