bush league vs unworthy

bush league

adj
  • Of inferior quality. 

  • Amateurish, unprofessional, unpolished, juvenile. 

noun
  • A professional sports association at the lower levels of minor league organization. 

  • A low-ranking or inferior level among groups, professions, organizations, etc. 

unworthy

adj
  • Not worthy; lacking value or merit; worthless. 

noun
  • An inadequate person. 

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