My relatives believe in Buddhism, which master can tell me what a Buddha is?

According to the old monk Mengcan, the full name of Buddha is Buddha, which means enlightenment! In this world, people are greedy, angry, ignorant, conceited, and doubtful. Although ordinary people understand all kinds of troubles, it is difficult to get rid of these troubles. Once the Buddha is enlightened, he will get rid of the troubles. Buddhism is the way to get rid of the troubles! This is the primary level of enlightenment, and it is also the pursuit of most Buddhists! That high-level enlightenment is to become an enlightened person to save these unenlightened sentient beings! Namo Amitabha!