cluttering vs puzzlement

cluttering

noun
  • The act of making, or condition of being, cluttered. 

  • A speech disorder characterized by fast, jerky, or irregular speech, which often sounds like stuttering. 

  • An instance of cluttered speech. 

puzzlement

noun
  • A puzzle. 

  • The confusing state of being puzzled; bewilderment 

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