Perdix perdix vs grey partridge

Perdix perdix and grey partridge both are nouns.

Word	Noun	Adjective	Verb	Adverb
Perdix perdix	Yes	No	No	No
grey partridge	Yes	No	No	No

As nouns, Perdix perdix and grey partridge are synonyms defined as:

Other synonyms of Perdix perdix include gray partridge, Hungarian partridge.

Perdix perdix (noun)	grey partridge (noun)
common European partridge	common European partridge