acquiescence vs confirmation

acquiescence

noun
  • Inaction, passivity, or neglect to take legal action when it is called for in order to assert, preserve, or safeguard a right, and which inaction implies the abandonment of said right. 

  • A silent or passive assent or submission, or a submission with apparent content, distinguished from avowed consent on the one hand, and on the other, from opposition or open discontent; quiet satisfaction. 

confirmation

noun
  • An act whereby something conditional or voidable is made sure and unavoidable, especially the possession of an estate. 

  • An official indicator that things will happen as planned. 

  • A ceremony of sealing and conscious acknowledgement of the faith in many Christian churches, typically around the ages of 14 to 18; considered a sacrament in some churches, including Catholicism, but not in most Protestant churches. 

  • A verification that something is true or has happened. 

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