rusty grackle vs rusty blackbird

rusty grackle and rusty blackbird both are nouns.

Word	Noun	Adjective	Verb	Adverb
rusty grackle	Yes	No	No	No
rusty blackbird	Yes	No	No	No

As nouns, rusty grackle and rusty blackbird are synonyms defined as:

rusty grackle and rusty blackbird: North American blackbird whose bluish-black plumage is rusty-edged in the fall

Other synonyms of rusty grackle include Euphagus carilonus.

rusty grackle (noun)	rusty blackbird (noun)
North American blackbird whose bluish-black plumage is rusty-edged in the fall	North American blackbird whose bluish-black plumage is rusty-edged in the fall