head over heels vs hotfoot

head over heels

adv
  • At top speed; frantically. 

  • Hopelessly, madly, to distraction, deeply, utterly. 

  • Tumbling upside down; somersaulting. 

adj
  • Hopelessly smitten, madly in love. 

hotfoot

adv
  • Hastily; without delay. 

adj
  • Moving with haste or zeal. 

noun
  • The prank of secretly inserting a match between the sole and upper of a victim's shoe and then lighting it. 

verb
  • To run (a distance). 

How often have the words head over heels and hotfoot occurred in a corpus of books? (source: Google Ngram Viewer )