bumbling vs bush league

bumbling

adj
  • Acting in a confused or ineffectual way; incompetent; showing little or no skill. 

noun
  • The act of one who bumbles; a mistake or error, especially through clumsiness. 

bush league

adj
  • Amateurish, unprofessional, unpolished, juvenile. 

  • Of inferior quality. 

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

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

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