abjectness vs melancholia

abjectness

noun
  • The state of being abject; abasement; meanness; servility. 

melancholia

noun
  • Deep sadness or gloom; melancholy 

  • depression, characterised by irrational fears, guilt and apathy 

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