earn one’s keep vs uphold

earn one’s keep

uphold

verb
  • To keep erect; to support; to sustain; to keep from falling 

  • To hold up; to lift on high; to elevate. 

  • To support by approval or encouragement, to confirm (something which has been questioned) 

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