difficulty vs pleasure

difficulty

noun
  • An objection. 

  • Physical danger from the environment, especially with risk of drowning 

  • An obstacle that hinders achievement of a goal. 

  • The state of being difficult, or hard to do. 

  • An awkward situation or quarrel. 

  • That which cannot be easily understood or believed. 

pleasure

noun
  • One's preference. 

  • A person, thing or action that causes enjoyment. 

  • A state of being pleased or contented; gratification. 

  • The will or desire of someone or some agency in power. 

verb
  • To give or afford pleasure to. 

  • To give sexual pleasure to. 

intj
  • pleased to meet you, "It's my pleasure" 

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