bush league vs rubbishy

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. 

rubbishy

adj
  • Of little or no value; worthless. 

  • Strewn with litter. 

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