lofty vs proletarian

lofty

adj
  • extremely proud; arrogant; haughty 

  • high, tall, having great height or stature 

  • idealistic, implying over-optimism 

proletarian

adj
  • Of or relating to the proletariat. 

noun
  • A member of the proletariat. 

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