conga vs yomp

conga

noun
  • A march of Cuban origin in four-four time in which people form a chain, each holding the hips of the person in front of them; in each bar, dancers take three shuffle steps and then kick alternate legs outwards at the beat; the chain weaves around the place and allows new participants to join the back of the chain. 

  • A tall, narrow, single-headed Cuban hand drum of African origin. 

verb
  • To dance the conga. 

yomp

noun
  • A long-distance march carrying full kit. 

verb
  • To make a strenuous long-distance march. 

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