hold on vs unstick

hold on

verb
  • To remain loyal. 

  • To grasp or grip firmly. 

  • To persist. 

  • To keep; to store something for someone. 

  • Wait a short while. 

unstick

verb
  • To free from the condition of being stuck. 

  • To leave the ground during takeoff. 

  • To become freed from a stuck condition. 

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