Enlightenment vs nibbana/nirvana What is the difference between enlightenment/awakening and nibbana/nirvana? And how do these terms relate to parinibbana/parinirvana?
Enlightenment, or Bodhi, refers to coming to a direct realization of the truth. Nibbana is the timeless state of perfect peace and happiness which occurs as a result of attaining Enlightenment, and it will occur immediately after attaining any of the four stages of enlightenment, and can be re-cultivated as well.

Parinibbana in common usage today refers to when a fully enlightened Arahat (one who has overcome all attachment and will not be reborn) undergoes bodily death. Instead of being reborn, they enter into Nibbana again, only this time they stay that way.