in other words vs specifically

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. 

specifically

adv

  • In a specific manner, applying to or naming a particular thing or things, expressly, explicitly. 

  • For a specific purpose or reason. 

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