metrical foot vs trample

metrical foot

noun
  • The basic unit of the underlying rhythm of verse 

trample

noun
  • The sound of heavy footsteps. 

  • A heavy stepping. 

verb
  • To crush something by walking on it. 

  • To treat someone harshly. 

  • To walk heavily and destructively. 

  • To cause emotional injury as if by trampling. 

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