folks vs masses

folks

noun
  • People in general; everybody or anybody. 

  • The members of one's immediate family, especially one's parents 

  • The police. 

  • Late 19th and early 20th century migrants to California from Iowa and other parts of the Midwestern United States. 

masses

noun
  • People, especially a large number of people; the general population. 

  • The total population. 

  • The lower classes or all but the elite. 

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