greed vs self-obsession

greed

noun
  • A selfish or excessive desire for more than is needed or deserved, especially of money, wealth, food, or other possessions. 

verb
  • To desire in a greedy manner, or to act on such a desire. 

self-obsession

noun
  • preoccupation with self; egocentrism; selfishness 

How often have the words greed and self-obsession occurred in a corpus of books? (source: Google Ngram Viewer )