artless vs bush league

artless

adj
  • Poorly made or done; crude. 

  • Free of artificiality; natural. 

  • Having or displaying no guile, cunning, or deceit. 

  • Lacking art, knowledge, or skill; uncultured and ignorant. 

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. 

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