oldwife vs Balistes vetula

oldwife and Balistes vetula both are nouns.

Word	Noun	Adjective	Verb	Adverb
oldwife	Yes	No	No	No
Balistes vetula	Yes	No	No	No

As nouns, oldwife and Balistes vetula are synonyms defined as:

Other synonyms of oldwife include Bessy cerca, oldwench, queen triggerfish.

oldwife (noun)	Balistes vetula (noun)
tropical Atlantic fish	tropical Atlantic fish
a common long-tailed sea duck of the northern parts of the United States