holm oak vs Quercus ilex

holm oak and Quercus ilex both are nouns.

Word	Noun	Adjective	Verb	Adverb
holm oak	Yes	No	No	No
Quercus ilex	Yes	No	No	No

As nouns, holm oak and Quercus ilex are synonyms defined as:

holm oak and Quercus ilex: evergreen oak of southern Europe having leaves somewhat resembling those of holly; yields a hard wood

Other synonyms of holm oak include evergreen oak, holly-leaved oak, holm tree.

holm oak (noun)	Quercus ilex (noun)
evergreen oak of southern Europe having leaves somewhat resembling those of holly; yields a hard wood	evergreen oak of southern Europe having leaves somewhat resembling those of holly; yields a hard wood
hard wood of the holm oak tree