self-regarding vs selfish

self-regarding

adj
  • considering oneself and one's own interests before others 

selfish

adj
  • Holding one's own self-interest as the standard for decision making. 

  • Relying on their own actions and capabilities to be effective in the game, rather than on other characters. 

  • Having regard for oneself above others’ well-being. 

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