cantor vs singer

cantor

noun
  • singer, especially someone who takes a special role of singing or song leading at a ceremony 

  • A prayer leader in a Jewish service; a hazzan 

singer

noun
  • A person who sings, often professionally. 

  • A machine for singeing cloth. 

  • A person who, or device which, singes. 

  • dance figure with a fixed structure, sung by a caller, or a piece of music with that structure. 

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