osprey vs Pandion haliaetus

osprey and Pandion haliaetus both are nouns.

Word	Noun	Adjective	Verb	Adverb
osprey	Yes	No	No	No
Pandion haliaetus	Yes	No	No	No

As nouns, osprey and Pandion haliaetus are synonyms defined as:

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

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

osprey (noun)	Pandion haliaetus (noun)
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