evergreen oak vs holm oak

evergreen oak

noun
  • The holm oak or ilex, Quercus ilex 

  • Used other than figuratively or idiomatically: see evergreen, oak. 

holm oak

noun
  • An evergreen tree, Quercus ilex, native to the Mediterranean region. 

How often have the words evergreen oak and holm oak occurred in a corpus of books? (source: Google Ngram Viewer )