earn one's keep vs provide

earn one's keep

verb
  • To perform satisfactory physical labor or to provide other worthy services in return for remuneration, lodging, or other benefits; to support oneself financially. 

  • To be worthwhile. 

provide

verb
  • To make a living; earn money for necessities. 

  • To give what is needed or desired, especially basic needs. 

  • To furnish (with), cause to be present. 

  • To make possible or attainable. 

  • To appoint to an ecclesiastical benefice before it is vacant. See provisor. 

  • To establish as a previous condition; to stipulate. 

  • To act to prepare for something. 

How often have the words earn one's keep and provide occurred in a corpus of books? (source: Google Ngram Viewer )