go-ahead vs grounding

go-ahead

adj
  • Progressive; exerting leadership. 

  • Being a score which gives the scoring team or player the lead in the game. 

  • Dashing; energetic. 

noun
  • Approval, agreement, or instruction to begin or proceed. 

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. 

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