daftness vs silliness

daftness

noun
  • Something that is daft. 

  • Property of being daft. 

silliness

noun
  • That which is perceived as silly or frivolous. 

  • An act that is silly; a result of being silly. 

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