faff around vs fuck about

faff around

verb
  • To waste time; spend time idly. 

fuck about

verb
  • To waste time with unimportant activities, often used as an admonition to urge the other party to stop wasting time. 

  • To fool around. 

How often have the words faff around and fuck about occurred in a corpus of books? (source: Google Ngram Viewer )