as follows vs in other words

as follows

adv

  • In the manner described hereafter. 

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. 

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