heads vs humanity

heads

intj
  • A shouted warning that something is falling from above, mind your heads; heads-up. 

noun
  • That part of older sailing ships forward of the forecastle and around the beak, used by the crew as their lavatory; still used as the word for toilets on a ship. 

  • High-grade marijuana. 

  • The draft scheme of a bill before it is formally introduced to a parliament. 

  • The side of a coin that bears the picture of the head of state or similar. 

  • Tiles laid at the eaves of a house. 

humanity

noun
  • Any academic subject belonging to the humanities. 

  • The human condition or nature. 

  • The quality of being benevolent; humane traits of character; humane qualities or aspects. 

  • Humankind; human beings as a group. 

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