permanent vs transient

permanent

adj
  • Lasting for an indefinitely long time. 

  • Without end, eternal. 

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). 

transient

adj
  • Decaying with time, especially exponentially. 

  • Intermediate. 

  • Occasional; isolated; one-off 

  • having a positive probability of being left and never being visited again. 

  • Passing or disappearing with time; transitory. 

  • Operating beyond itself; having an external effect. 

  • Passing through; passing from one person to another. 

  • Remaining for only a brief time. 

noun
  • A relatively loud, non-repeating signal in an audio waveform that occurs very quickly, such as the attack of a snare drum. 

  • A homeless person. 

  • homestay 

  • A transient phenomenon, especially an electric current; a very brief surge. 

  • A module that generally remains in memory only for a short time. 

  • Something that is transient. 

  • A person who passes through a place for a short time; a traveller; a migrant worker. 

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