purchaser vs remitter

purchaser

noun
  • One who purchases. 

remitter

noun
  • One who remits, or makes remittance. 

  • One who pardons. 

  • The sending or placing back of a person to a title or right formerly held; the restitution of one who obtains possession of property under a defective title, to his rights under some valid title by virtue of which he might legally have entered into possession only by suit 

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