The use of Heaven(blue) and hell(red) in the Modern Age.
The 1960's was a low period for the discussion of Heaven but it is making a comeback.
So for Heaven's sake say Heavenly thoughts to your neighbor today. And pray for a revival of Reformed Christianity in your Neighborhood. The reason behind this was that I am currently reading Palahniuk's Hell; which sparked a need to look at the use of the words Heaven and Hell. There is no Heaven without hell. No Hell without Heaven.
The Ngram Google Graph maker produced this chart for our viewing.