inauspiciousness vs propitiousness

inauspiciousness

noun
  • The state, quality, or condition of being inauspicious or unpropitious; unfavorableness. 

propitiousness

noun
  • The favorable quality of strongly indicating a successful result. 

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