acquaint vs gen up

acquaint

verb
  • To furnish or give experimental knowledge of; to make (one) know; to make familiar. 

gen up

verb
  • To study in detail; to familiarize oneself with all available information. 

  • To inform or teach with all relevant details; to brief. 

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