boarder vs rentor

boarder

noun
  • Someone who pays for meals and lodging in a house rather than a hotel. 

  • One who boards a vehicle. 

  • Someone who takes part in a boardsport, such as surfing or snowboarding. 

  • A pupil who lives at school during term time. 

  • A sailor attacking an enemy ship by boarding her, or one repelling such attempts by an enemy. 

rentor

noun
  • A person who rents a property to a rentee 

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