sameness vs semblance

sameness

noun
  • The quality of being the same; identity. 

  • A tiring lack of variety; monotony. 

  • The state of being equivalent; equality. 

semblance

noun
  • likeness, similarity; the quality of being similar. 

  • the way something looks; appearance; form 

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