Oriental vs eastern

Oriental

adj
  • Designating various types of aromatic tobacco grown in Turkey and the Balkans. 

  • Pertaining to the regions east of the Mediterranean, beyond the Roman Empire or the early Christian world; of the Near East, the Middle East or the Far East, now especially relating to East Asia. 

  • Of a pearl or other precious stone: having a superior lustre. 

  • Pertaining to the eastern part of the sky; happening before sunrise. 

noun
  • A precious stone, especially an orient pearl. 

  • A member or descendant of the peoples and cultures of the Orient. 

  • A lily cultivar of a widely varied group, with strong scent. 

eastern

adj
  • Oriental. 

  • Blowing from the east; easterly. 

  • Of, facing, situated in, or related to the east. 

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