hotfoot vs volatile

hotfoot

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). 

adv
  • Hastily; without delay. 

volatile

adj
  • Quick to become angry or violent. 

  • Explosive. 

  • Temporary or ephemeral. 

  • Variable or erratic. 

  • Fickle. 

  • Whose content is lost when the computer is powered down 

  • Having its associated memory immediately updated with any changes in value. 

  • Potentially violent. 

  • Evaporating or vaporizing readily under normal conditions. 

noun
  • A variable that is volatile, i.e. has its associated memory immediately updated with any change in value. 

  • A chemical or compound that changes into a gas easily. 

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