Army vs Pen

Army

name

  • Hexagram 7 of the I Ching (䷆) 

  • A sports team representing the US Military Academy at West Point. 

Pen

name

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

  • A diminutive of the female given name Penelope 

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