proletariat vs them

proletariat

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

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

them

pron
  • Used as the direct object of a verb. 

  • Used as the object of a preposition. 

  • Used as the indirect object of a verb. 

det
  • Those. 

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