old-time vs trad

old-time

adj
  • From or reminiscent of an earlier time or era; old-fashioned. 

trad

adj
  • traditional 

noun
  • Irish traditional music 

  • A traditionalist. 

  • Anything traditional, such as a school or a model of car. 

  • traditional climbing. 

How often have the words old-time and trad occurred in a corpus of books? (source: Google Ngram Viewer )