go away vs unknow

go away

verb
  • To vanish or disappear. 

  • To depart or leave a place. 

  • To travel somewhere, especially on holiday or vacation. 

intj
  • A command encouraging someone to leave. 

unknow

verb
  • To undo the process of knowing, to lose knowledge of something. 

How often have the words go away and unknow occurred in a corpus of books? (source: Google Ngram Viewer )