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upgrade

noun
  1. the act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components)
    “the power plant received a new upgrade”
  2. hardware that provides better performance than an earlier version did
  3. the property possessed by a slope or surface that rises
    rise
  4. a reservation that is improved
    “I got an upgrade to first class when coach class was full”
  5. software that provides better performance than an earlier version did
  6. an upward slope or grade (as in a road)
    raise
verb
  1. to improve what was old or outdated
    “I've upgraded my computer so I can run better software”
  2. give better travel conditions to
    “The airline upgraded me when I arrived late and Coach Class was full”
  3. get better travel conditions
    “I upgraded to First Class when Coach Class was overbooked”
  4. rate higher
  5. give a promotion to or assign to a higher position
    raise