bird of prey vs raptorial bird

bird of prey and raptorial bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
bird of prey	Yes	No	No	No
raptorial bird	Yes	No	No	No

As nouns, bird of prey and raptorial bird are synonyms defined as:

bird of prey and raptorial bird: any of numerous carnivorous birds that hunt and kill other animals

Other synonyms of bird of prey include raptor.

bird of prey (noun)	raptorial bird (noun)
any of numerous carnivorous birds that hunt and kill other animals	any of numerous carnivorous birds that hunt and kill other animals