easefulness vs walk in the park

easefulness

noun
  • State of being easeful, or a quality of promoting ease and tranquillity. 

walk in the park

noun
  • Something easy or pleasant. 

  • Used other than figuratively or idiomatically: A recreational walk in a park. 

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