The term 'Buddha' refers to Siddhartha Gautama, the founder of Buddhism, who attained enlightenment and became known as 'the Awakened One.' His teachings form the core of Buddhist philosophy, focusing on the Four Noble Truths and the Eightfold Path as a means to overcome suffering and attain Nirvana. The Buddhaโs insights on the nature of existence have influenced countless individuals and cultures throughout history.