bush league vs inept

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. 

inept

adj
  • Unfit; unsuitable. 

  • Not able to do something; not proficient; displaying incompetence. 

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