multitude vs proletariat

multitude

noun
  • The mass of ordinary people; the masses, the populace. 

  • A great amount or number, often of people; abundance, myriad, profusion. 

proletariat

noun
  • The lowest class of society; also, the lower classes of society generally; the masses. 

  • Wage earners collectively, excluding salaried workers; people who own no capital and depend on their labour for survival; the working class, especially when seen as engaged in a class struggle with the bourgeoisie (“the capital-owning class”). 

  • The lowest class of citizens, who had no property and few rights, and were regarded as contributing only their offspring to the state. 

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