The Theravada Buddhists believe that Nirvana is A perfect state of enlightenment and freedom from the cycle of suffering, death, and rebirth. They also believe that Arhat was A perfected saint who attained enlightenment through their efforts. The Theravada Buddhists believe the Pali Canon is essential to the scripture and commentary.
The Shakyamuni Buddha is a veneration of the historical Buddha, and Karma is the idea that actions determine what happens to us.