done thing vs precedent

done thing

noun
  • Something done habitually or according to social norms, expectations, etc. 

precedent

noun
  • An established habit or custom. 

  • The previous version. 

  • A decided case which is cited or used as an example to justify a judgment in a subsequent case. 

  • An act in the past which may be used as an example to help decide the outcome of similar instances in the future. 

adj
  • Happening or taking place earlier in time; previous or preceding. 

verb
  • To provide precedents for. 

  • To be a precedent for. 

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