disinclination vs foot-dragging

disinclination

noun
  • The state of being disinclined; want of propensity, desire, or affection; slight aversion or dislike 

foot-dragging

noun
  • The deliberate delaying of obligatory action. 

How often have the words disinclination and foot-dragging occurred in a corpus of books? (source: Google Ngram Viewer )