genarian vs oldtimer

genarian

noun

  • An elderly person, especially one over the age of 60. 

adj

  • Concerning rules or principles as opposed to acts. 

oldtimer

noun

  • An elderly person. 

  • A vintage car. 

  • A veteran. 

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