fatha vs granddad

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/. 

granddad

noun
  • grandfather 

  • A familiar or disparaging term of address to an old man. 

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