spellcaster vs tagati

spellcaster

noun
  • One who casts spells; a magician; a sorcerer. 

tagati

noun
  • In South African English, a wizard, witch, or a spiteful person who operates in secret to harm others or who uses poisons and familiar spirits to carry out harmful deeds. 

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