sprig tail vs sharp-tailed grouse

sprig tail and sharp-tailed grouse both are nouns.

Word	Noun	Adjective	Verb	Adverb
sprig tail	Yes	No	No	No
sharp-tailed grouse	Yes	No	No	No

As nouns, sprig tail and sharp-tailed grouse are synonyms defined as:

sprig tail and sharp-tailed grouse: large grouse of prairies and open forests of western North America

Other synonyms of sprig tail include Pedioecetes phasianellus, sprigtail.

sprig tail (noun)	sharp-tailed grouse (noun)
large grouse of prairies and open forests of western North America	large grouse of prairies and open forests of western North America