sharp-tailed grouse vs sprig tail

sharp-tailed grouse and sprig tail both are nouns.

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

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

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

Other synonyms of sharp-tailed grouse include Pedioecetes phasianellus, sprigtail.

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