European black grouse vs Lyrurus tetrix

European black grouse and Lyrurus tetrix both are nouns.

Word	Noun	Adjective	Verb	Adverb
European black grouse	Yes	No	No	No
Lyrurus tetrix	Yes	No	No	No

As nouns, European black grouse and Lyrurus tetrix are synonyms defined as:

European black grouse and Lyrurus tetrix: large northern European grouse that is black with a lyre-shaped tail

Other synonyms of European black grouse include heathfowl.

European black grouse (noun)	Lyrurus tetrix (noun)
large northern European grouse that is black with a lyre-shaped tail	large northern European grouse that is black with a lyre-shaped tail