opah vs Lampris regius

opah and Lampris regius both are nouns.

Word	Noun	Adjective	Verb	Adverb
opah	Yes	No	No	No
Lampris regius	Yes	No	No	No

As nouns, opah and Lampris regius are synonyms defined as:

opah and Lampris regius: large elliptical brightly colored deep-sea fish of Atlantic and Pacific and Mediterranean

Other synonyms of opah include moonfish.

opah (noun)	Lampris regius (noun)
large elliptical brightly colored deep-sea fish of Atlantic and Pacific and Mediterranean	large elliptical brightly colored deep-sea fish of Atlantic and Pacific and Mediterranean