self-interest vs self-seeking

self-interest

noun
  • One's personal interest or advantage, especially when pursued without regard for others. 

self-seeking

noun
  • The selfish promotion of one's own interests. 

adj
  • Mindful of, or promoting, only one's own interests. 

  • That searches for a target automatically. 

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