acquiescent vs complaining

acquiescent

adj
  • willing to acquiesce, accept or agree to something without objection, protest or resistance 

  • resting satisfied or submissive; disposed tacitly to submit 

complaining

noun
  • The act by which someone complains; a complaint. 

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