go away vs slide off

go away

verb
  • To depart or leave a place. 

  • To travel somewhere, especially on holiday or vacation. 

  • To vanish or disappear. 

intj
  • A command encouraging someone to leave. 

slide off

verb
  • To leave a place, a meeting, etc., without being noticed; to slip away, slip off. 

  • Used other than figuratively or idiomatically: see slide, off. 

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