arrogance vs diffidence

arrogance

noun
  • The state of being arrogant; a type of extreme or foolish pride in which someone feels much superior to another. 

diffidence

noun
  • The state of being diffident, timid or shy; reticence or self-effacement. 

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