purple beech vs Fagus sylvatica atropunicea

purple beech and Fagus sylvatica atropunicea both are nouns.

Word	Noun	Adjective	Verb	Adverb
purple beech	Yes	No	No	No
Fagus sylvatica atropunicea	Yes	No	No	No

As nouns, purple beech and Fagus sylvatica atropunicea are synonyms defined as:

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

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

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