dispensation vs letting

dispensation

noun
  • That which is dispensed, dealt out, or given; that which is bestowed on someone 

  • In the Roman Catholic Church, an exemption from some ecclesiastical law, or from an obligation to God which a person has incurred of his own free will (oaths, vows, etc.). 

  • The act of dispensing or dealing out; distribution 

  • A system of principles, promises, and rules ordained and administered; scheme; economy 

  • The distribution of good and evil by God to man. 

  • The relaxation of a law in a particular case; permission to do something forbidden, or to omit doing something enjoined; exemption. 

letting

noun
  • Synonym of tenancy. 

  • Hyponyms: sublease, underlease, subtenancy, undertenancy, subletting, underletting, (informal) sublet, underlet 

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