waddle vs yomp

waddle

verb
  • To walk with short steps, tilting the body from side to side. 

  • To move slowly. 

noun
  • A squat, swaying gait. 

yomp

verb
  • To make a strenuous long-distance march. 

noun
  • A long-distance march carrying full kit. 

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