meconium vs opium

meconium

noun
  • A dark green mass, the contents of the fetal intestines during the later stages of mammalian gestation, that forms the first feces of the newborn. 

opium

noun
  • A yellow-brown, addictive narcotic drug obtained from the dried juice of unripe pods of the opium poppy, Papaver somniferum, and containing alkaloids such as morphine, codeine, and papaverine. 

  • Anything that numbs or stupefies. 

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