refrain vs touch base

refrain

verb
  • To stop oneself from some action or interference; to abstain. 

  • To abstain from (food or drink). 

noun
  • The chorus or burden of a song repeated at the end of each verse or stanza. 

  • A much repeated comment, complaint, or saying. 

touch base

verb
  • To touch a base, usually with a foot but sometimes with a hand. 

  • To meet or make contact with someone, usually to consult, review, visit, or communicate. 

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