mortal vs permanent

mortal

adj
  • Of a sin: involving the penalty of spiritual death, rather than merely venial. 

  • Human; belonging or pertaining to people who are mortal. 

  • Of or relating to the time of death. 

  • Punishable by death. 

  • Affecting as if with power to kill; deathly. 

  • Very painful or tedious; wearisome. 

  • Susceptible to death by aging, sickness, injury, or wound; not immortal. 

  • Causing death; deadly, fatal, killing, lethal (now only of wounds, injuries etc.). 

  • Very drunk. 

  • Fatally vulnerable. 

noun
  • A human; someone susceptible to death. 

adv
  • Mortally; enough to cause death. 

permanent

adj
  • Without end, eternal. 

  • Lasting for an indefinitely long time. 

noun
  • A card whose effects persist beyond the turn on which it is played. 

  • A chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm. 

  • Given an n⨯n matrix a_ij,, the sum over all permutations 𝜋, of ∏ᵢ₌₁ⁿa_i𝜋(i). 

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