regroup vs restructure

regroup

noun
  • An act of regrouping. 

verb
  • To group or categorize again. 

  • To pause and get organized again. 

restructure

noun
  • A reorganization. 

verb
  • To modify the terms of a loan, providing relief to a debtor who would otherwise be forced to default. 

  • To change the organization of. 

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