discharge vs parole

discharge

noun
  • The act of releasing an inpatient from hospital. 

  • The volume of water transported by a river in a certain amount of time, usually in units of m³/s (cubic meters per second). 

  • The process of flowing out. 

  • The act of firing a projectile, especially from a firearm. 

  • Pus or exudate (other than blood) from a wound or orifice, usually due to infection or pathology. 

  • The act of accomplishing (an obligation) or repaying a debt etc.; performance. 

  • The act of expelling or letting go. 

  • The act of releasing an accumulated charge. 

  • The act of releasing a member of the armed forces from service. 

  • The process of unloading something. 

verb
  • To operate (any weapon that fires a projectile, such as a shotgun or sling). 

  • To send away (a creditor) satisfied by payment; to pay one's debt or obligation to. 

  • To relieve of an office or employment; to send away from service; to dismiss. 

  • To release (an accumulated charge). 

  • To release legally from confinement; to set at liberty. 

  • To let fly, as a missile; to shoot. 

  • To free of a debt, claim, obligation, responsibility, accusation, etc.; to absolve; to acquit; to forgive; to clear. 

  • To release (an auxiliary assumption) from the list of assumptions used in arguments, and return to the main argument. 

  • To unload a ship or another means of transport. 

  • To give forth; to emit or send out. 

  • To release (an inpatient) from hospital. 

  • To put forth, or remove, as a charge or burden; to take out, as that with which anything is loaded or filled. 

  • To set aside; to annul; to dismiss. 

  • To bleach out or to remove or efface, as by a chemical process. 

  • To release (a member of the armed forces) from service. 

  • To accomplish or complete, as an obligation. 

  • To expel or let go. 

  • To let fly; to give expression to; to utter. 

parole

noun
  • Conditional release of a prisoner (now especially before the end of a custodial sentence), or the term or state of such release; the system governing such releases. 

  • A word of honor, especially given by a prisoner of war, to not engage in combat if released. 

  • Originally, one's oath or word of honour, given as a condition of release from custody; now specifically, describing the release of a former prisoner under certain conditions, especially the promise of good behaviour. 

  • Language in use, as opposed to language as a system. 

  • The permission for a foreigner who does not meet the technical requirements for a visa to be allowed to enter the U.S. on humanitarian grounds. 

verb
  • To release (a prisoner) on the understanding that s/he checks in regularly and obeys the law. 

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