establish vs get off the ground

establish

verb
  • To make stable or firm; to confirm. 

  • To form; to found; to institute; to set up in business. 

  • To prove and cause to be accepted as true; to establish a fact; to demonstrate. 

  • To appoint or adopt, as officers, laws, regulations, guidelines, etc.; to enact; to ordain. 

get off the ground

verb
  • To make (something) succeed. 

  • To succeed or begin to succeed. 

How often have the words establish and get off the ground occurred in a corpus of books? (source: Google Ngram Viewer )