Circus cyaneus vs marsh hawk

Circus cyaneus and marsh hawk both are nouns.

Word	Noun	Adjective	Verb	Adverb
Circus cyaneus	Yes	No	No	No
marsh hawk	Yes	No	No	No

As nouns, Circus cyaneus and marsh hawk are synonyms defined as:

Circus cyaneus and marsh hawk: common harrier of North America and Europe; nests in marshes and open land

Other synonyms of Circus cyaneus include hen harrier, northern harrier.

Circus cyaneus (noun)	marsh hawk (noun)
common harrier of North America and Europe; nests in marshes and open land	common harrier of North America and Europe; nests in marshes and open land