pirouette vs right-about

pirouette

noun
  • The whirling about of a horse. 

  • A whirling or turning on the toes in dancing, primarily in ballet. 

verb
  • To perform a pirouette; to whirl on the toes, like a dancer. 

right-about

noun
  • A 180-degree turn towards the right (especially of troops) 

How often have the words pirouette and right-about occurred in a corpus of books? (source: Google Ngram Viewer )