grounding vs past

grounding

noun
  • Fundamental knowledge or background in a field or discipline. 

  • The collision of a ship with ground beneath the surface of the water. 

  • The absorption of energy through visualized "roots" descending from oneself into the ground, using chi. 

  • The act by which a child is grounded (forbidden from going out, using electronics, etc.). 

  • The return to a fully conscious state after a psychedelic experience. 

  • The interconnecting metal chassis/frame of a device, appliance, machine, or metal raceway via a designated conductor to earth at the service panel. It may be bare or covered, and does not carry current in normal operation. 

  • The background of embroidery, etc. 

  • The prevention of aircraft takeoff because of government action. 

past

prep
  • Beyond in place or quantity 

  • Any number of minutes after the last hour 

  • Having recovered or moved on from (a traumatic experience, etc.). 

  • No longer capable of. 

  • Passing by, especially without stopping or being delayed. 

noun
  • The period of time that has already happened, in contrast to the present and the future. 

  • The past tense. 

adj
  • Of a period of time: having just gone by; previous. 

  • Having already happened; in the past; finished. 

  • Following expressions of time to indicate how long ago something happened; ago. 

  • Of a tense, expressing action that has already happened or a previously-existing state. 

adv
  • In a direction that passes. 

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