sea eagle vs bird of Jove

sea eagle and bird of Jove both are nouns.

Word	Noun	Adjective	Verb	Adverb
sea eagle	Yes	No	No	No
bird of Jove	Yes	No	No	No

As nouns, bird of Jove is a hypernym of sea eagle; that is, bird of Jove is a word with a broader meaning than sea eagle:

sea eagle: any of various large eagles that usually feed on fish
bird of Jove: any of various large keen-sighted diurnal birds of prey noted for their broad wings and strong soaring flight

Other hypernyms of sea eagle include eagle.

sea eagle (noun)	bird of Jove (noun)
any of various large eagles that usually feed on fish	any of various large keen-sighted diurnal birds of prey noted for their broad wings and strong soaring flight
large harmless hawk found worldwide that feeds on fish and builds a bulky nest often occupied for years