concerted vs piled

concerted

adj
  • Having separate parts for voices and instruments. 

  • Performed through a concert of effort; done by agreement or in combination. 

piled

adj
  • Having a pile or point; pointed. 

  • Formed from a pile or fagot. 

  • Having a pile or nap. 

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