Nut vs Pen

Nut

name

  • The goddess who serves as the personification of the sky. 

Pen

name

  • A diminutive of the female given name Penelope 

  • The 68th sura (chapter) of the Qur'an. 

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