bourgeoisification vs gentrification

bourgeoisification

noun
  • The process of adopting or the condition of adopting the characteristics of the bourgeoisie; embourgeoisement. 

gentrification

noun
  • The renewal and rebuilding that accompanies the influx of middle class or affluent people into deteriorating areas and often displaces earlier, usually poorer, residents; any example of such a process. 

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