blue darter vs Cooper's hawk

blue darter and Cooper's hawk both are nouns.

Word	Noun	Adjective	Verb	Adverb
blue darter	Yes	No	No	No
Cooper's hawk	Yes	No	No	No

As nouns, blue darter and Cooper's hawk are synonyms defined as:

blue darter and Cooper's hawk: bluish-grey North American hawk having a darting flight

Other synonyms of blue darter include Accipiter cooperii.

blue darter (noun)	Cooper's hawk (noun)
bluish-grey North American hawk having a darting flight	bluish-grey North American hawk having a darting flight