waltz vs whirligig

waltz

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

  • A ballroom dance in 3/4 time. 

  • A simple task. 

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. 

whirligig

noun
  • Anything that whirls or spins around, such as a toy top or a merry-go-round. 

  • A whirligig beetle. 

  • A device incorporating spinning, wind-driven propellers or pinwheels, used as whimsical outdoor decoration in a garden or on a porch. 

  • A device for punishing prisoners, comprising a wooden cage that rapidly spins around to induce nausea. 

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