backbreaker vs wearing

backbreaker

noun
  • A strenuous and exhausting task, typically involving physical effort. 

wearing

noun
  • The mechanical process of eroding or grinding. 

  • The act by which something is worn. 

  • That which is worn; clothes; garments. 

adj
  • Causing erosion. 

  • Causing tiredness; trying to a person's patience. 

  • Intended to be worn. 

  • That wears (deteriorate through use), and may eventually wear out. 

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