Bas-relief: Bas-relief refers to sculptures that are carved into flat surfaces but still have some depth. The carvings on Borobudur are examples of bas-reliefs.
Enlightenment: Enlightenment refers to the state of ultimate wisdom and understanding achieved by individuals in various religions, including Buddhism.
Pilgrimage: A pilgrimage is a journey undertaken by individuals for religious or spiritual purposes. Many Buddhists visit Borobudur as part of their pilgrimage to sacred sites.