self-blood vs self-immolation

self-blood

noun
  • The shedding of one's own blood; self-slaughter; suicide. 

  • One's direct progeny or offspring. 

self-immolation

noun
  • The act of self-sacrificing oneself, in any manner of ways. 

  • The act of setting oneself on fire, especially as a form of protest. 

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