selfhood vs unprecedentedness

selfhood

noun
  • The quality of being self-centered or egocentric; selfishness. 

  • The fully developed self; one's personality, character. 

  • State of having a distinct identity, or being an individual distinct from others; individuality. 

unprecedentedness

noun
  • Quality of being unprecedented. 

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