gen up vs practise

gen up

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

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

practise

verb
  • To teach or accustom by practice; to train. 

  • To make use of; to employ. 

  • To repeat (an activity) as a way of improving one's skill in that activity. 

  • To put into practice; to carry out; to act upon; to commit; to execute; to do. 

  • To perform or observe in a habitual fashion. 

  • To pursue (a career, especially law, fine art or medicine). 

  • To repeat an activity in this way. 

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