breathing space vs wiggle room

breathing space

noun
  • A rest, pause, or respite. 

  • Enough distance so that one can feel unfettered. 

  • Sufficient space or a span of time in which to recover one's breath. 

wiggle room

noun
  • The opportunity to make alternative decisions or to pursue other courses of action, especially any involving only minor changes to one's present situation or course. 

How often have the words breathing space and wiggle room occurred in a corpus of books? (source: Google Ngram Viewer )