fatherness vs filiation

fatherness

noun
  • The state or quality of being a father. 

filiation

noun
  • The condition of being a child of a specified parent. 

  • The determination of paternity. 

  • One that is derived from a parent or source; an offshoot. 

  • The ancestry or lineage shared by a group having the same bloodline. 

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