red-tailed hawk vs redtail

red-tailed hawk and redtail both are nouns.

Word	Noun	Adjective	Verb	Adverb
red-tailed hawk	Yes	No	No	No
redtail	Yes	No	No	No

As nouns, red-tailed hawk and redtail are synonyms defined as:

red-tailed hawk and redtail: dark brown American hawk species having a reddish-brown tail

Other synonyms of red-tailed hawk include Buteo jamaicensis.

red-tailed hawk (noun)	redtail (noun)
dark brown American hawk species having a reddish-brown tail	dark brown American hawk species having a reddish-brown tail
	European songbird with a reddish breast and tail; related to Old World robins