interloper vs parvenu

interloper

noun
  • One who interferes, intrudes or gets involved where not welcome, particularly a self-interested intruder. 

parvenu

noun
  • A person who has risen, climbed up, or has been promoted to a higher social class, especially through acquisition of wealth, privileges, or political authority but has not gained social acceptance by those within that new class. 

adj
  • Being a parvenu; also, like, having the characteristics of, or associated with a parvenu. 

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