gyration vs right-about

gyration

noun
  • The act of turning or whirling, especially around a fixed axis or centre; a circular or spiral motion; rotation. 

  • The arrangement of convolutions of gyri in the cerebral cortex of the brain. 

  • One of the whorls of a spiral univalve shell. 

  • A rotation around an axis which is not the centre of rotational symmetry; an eccentric or off-centre rotation. 

right-about

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

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