ambulate vs hoof

ambulate

verb
  • To walk; to relocate oneself under the power of one's own legs. 

hoof

verb
  • To walk. 

  • To trample with hooves. 

  • To dance, especially as a professional. 

  • To kick, especially to kick a football a long way downfield with little accuracy. 

noun
  • The tip of a toe of an ungulate such as a horse, ox or deer, strengthened by a thick keratin covering. 

  • The human foot. 

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