news commentator vs presenter

news commentator

presenter

noun
  • A small handheld device used to remotely control a computerised slide show. 

  • A conceptual layer in GUI-based software that assumes the functionality of the "middle-man". 

  • Someone who presents a broadcast programme; a compere or master of ceremonies. 

  • Someone who presents a thing or person to someone else. 

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