frequent vs repeatable

frequent

adj
  • Done or occurring often; common. 

  • Occurring at short intervals. 

  • Addicted to any course of conduct; inclined to indulge in any practice; habitual; persistent. 

verb
  • To visit often. 

repeatable

adj
  • Able to be repeated 

  • That gives the same results when repeated 

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