in other words vs just so

in other words

adv
  • used to introduce an explanation, simplification, or clarification 

prep
  • Stated or interpreted another way; Used to introduce an explanation, simplification, or clarification. 

just so

adv
  • Used other than figuratively or idiomatically: see just, so 

  • In the precise manner indicated. 

How often have the words in other words and just so occurred in a corpus of books? (source: Google Ngram Viewer )