runemaster vs sorcerer

runemaster

noun
  • One who has mastered the use of runes for magical, divinatory, or other esoteric uses. 

  • A runesmith; one skilled at carving and deciphering runes. 

sorcerer

noun
  • A magician or wizard, sometimes specifically male. 

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