insentient vs spark out

insentient

adj
  • Having no consciousness or animation; not sentient. 

  • Insensitive, indifferent. 

spark out

adj
  • Completely asleep or unconscious. 

verb
  • To render unconscious; to knock out. 

How often have the words insentient and spark out occurred in a corpus of books? (source: Google Ngram Viewer )