conga vs waltz

conga

verb
  • To dance the conga. 

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

  • 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. 

waltz

verb
  • To dance the waltz (with). 

  • To move briskly and unhesitatingly, especially in an inappropriately casual manner, or when unannounced or uninvited. 

  • To move with fanfare. 

  • To accomplish a task with little effort. 

noun
  • A ballroom dance in 3/4 time. 

  • A piece of music for this dance (or in triple time). 

  • A simple task. 

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