overmuch vs price gouging

overmuch

noun
  • An excessive amount; too much. 

det
  • Very much; too much 

adv
  • Too much; overly much 

adj
  • Excessive. 

price gouging

noun
  • The act of or an instance of charging services or pricing goods at unreasonably high prices. 

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