spruce grouse vs Canachites canadensis

spruce grouse and Canachites canadensis both are nouns.

Word	Noun	Adjective	Verb	Adverb
spruce grouse	Yes	No	No	No
Canachites canadensis	Yes	No	No	No

As nouns, spruce grouse and Canachites canadensis are synonyms defined as:

spruce grouse and Canachites canadensis: North American grouse that feeds on evergreen buds and needles

spruce grouse (noun)	Canachites canadensis (noun)
North American grouse that feeds on evergreen buds and needles	North American grouse that feeds on evergreen buds and needles