bird of prey vs raptor

bird of prey and raptor both are nouns.

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

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

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

Other synonyms of bird of prey include raptorial bird.

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