corban vs invocation

corban

noun
  • An offering to God, especially in fulfilment of a vow. 

  • An alms basket; a vessel to receive gifts of charity; a treasury of the church, where offerings are deposited. 

invocation

noun
  • The act or form of calling for the assistance or presence of some superior being, especially prayer offered to a divine being. 

  • The act of invoking, such as a function call. 

  • A call or summons, especially a judicial call, demand, or order. 

  • An act of invoking or claiming a legal right. 

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