evanescent vs hotfoot

evanescent

adj
  • Ephemeral, fleeting, momentary. 

  • Disappearing, vanishing. 

  • Of an oscillating electric or magnetic field: not propagating as an electromagnetic wave but having its energy spatially concentrated in the vicinity of its source. 

  • Of a number or value: diminishing to the point of reaching zero as a limit; infinitesimal. 

  • Of plant parts: shed after a period. 

  • Barely there; almost imperceptible. 

hotfoot

adj
  • Moving with haste or zeal. 

verb
  • To run (a distance). 

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

adv
  • Hastily; without delay. 

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