boring vs sing-song

boring

noun
  • A pit or hole which has been bored. 

  • Fragment thrown up when something is bored or drilled. 

adj
  • Capable of penetrating; piercing. 

  • Used, designed to be used, or able to drill holes. 

  • Suffering from boredom; mildly annoyed and restless through having nothing to do. 

  • Causing boredom or tiredness; making you to feel tired and impatient. 

sing-song

noun
  • A kind of verse with a simple, song-like rhythm. 

  • An informal gathering involving group singing. 

adj
  • Like a piece of sing-song; simple and melodic, song-like. 

How often have the words boring and sing-song occurred in a corpus of books? (source: Google Ngram Viewer )