Equator vs World

Equator

name

  • Earth’s equator. 

World

name

  • Earth: the Earth (our earth). 

  • The Universe: our universe. 

  • The Developed World (the developed world). 

  • The Industrialized World (the industrialized world). 

  • The Third World (the third world). 

  • The First World (the first world). 

  • Existence. 

  • The Fourth World (the fourth world). 

  • The Second World (the second world). 

  • The Developing World (the developing world). 

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