sea eagle vs Pandion haliaetus

sea eagle and Pandion haliaetus both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea eagle	Yes	No	No	No
Pandion haliaetus	Yes	No	No	No

As nouns, sea eagle and Pandion haliaetus are synonyms defined as:

sea eagle and Pandion haliaetus: large harmless hawk found worldwide that feeds on fish and builds a bulky nest often occupied for years

Other synonyms of sea eagle include fish eagle, fish hawk, osprey.

sea eagle (noun)	Pandion haliaetus (noun)
any of various large eagles that usually feed on fish	large harmless hawk found worldwide that feeds on fish and builds a bulky nest often occupied for years
large harmless hawk found worldwide that feeds on fish and builds a bulky nest often occupied for years