Fagus purpurea vs copper beech

Fagus purpurea and copper beech both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fagus purpurea	Yes	No	No	No
copper beech	Yes	No	No	No

As nouns, Fagus purpurea and copper beech are synonyms defined as:

Fagus purpurea and copper beech: variety of European beech with shining purple or copper-colored leaves

Other synonyms of Fagus purpurea include Fagus sylvatica atropunicea, Fagus sylvatica purpurea, purple beech.

Fagus purpurea (noun)	copper beech (noun)
variety of European beech with shining purple or copper-colored leaves	variety of European beech with shining purple or copper-colored leaves