self-seeking vs selfishness

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. 

selfishness

noun
  • the quality of being selfish; the condition of putting one's own interests before those of others. 

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