tromp vs yomp

tromp

verb
  • To tread heavily, especially to crush underfoot. 

  • To utterly defeat an opponent. 

noun
  • A blowing apparatus in which air, drawn into the upper part of a vertical tube through side holes by a stream of water within, is carried down with the water into a box or chamber below which it is led to a furnace. 

yomp

verb
  • To make a strenuous long-distance march. 

noun
  • A long-distance march carrying full kit. 

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