fatha vs paternity

fatha

noun
  • father 

  • The vowel designated by this mark. 

  • In Arabic script, the vowel point for a, appearing as a diagonal line placed above a letter ( ـَ ) and designating a short a /a/. If the Arabic letters ا (أَلِف (ʔalif)) or ى (أَلِف مَقْصُورَة (ʔalif maqṣūra)) immediately follow, it indicates a long ā /aː/. 

paternity

noun
  • parental descent from a father 

  • legal acknowledgement of a man's fatherhood of a child 

  • authorship 

  • fatherhood, being a father 

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