Enlightenment == 覺悟
"Enlightenment" sometimes refers to the attainment of Buddhahood, as the "Enlightened One" means Buddha. If one is enlightened, one has a complete and perfect understanding of the reality character of everything.
bodhi (q.v.). - The 7 elements of e.: bojjhanga (q.v.). - A being destined for e.: Bodhisatta (q.v.).