aby vs hold on

aby

verb
  • To endure or tolerate (something); to experience. 

hold on

verb
  • To keep; to store something for someone. 

  • To remain loyal. 

  • To grasp or grip firmly. 

  • To persist. 

  • Wait a short while. 

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