particularly vs that is

particularly

adv
  • In detail; with regard to particulars. 

  • To a great extent. 

  • Especially, extremely. 

  • Specifically, uniquely or individually. 

that is

adv
  • In other words; that is to say. Used to introduce a clarification or explanation 

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