A professional athlete is someone who participates in sports for financial remuneration and has extensive training and skill. In contrast, an amateur athlete engages in sports primarily for enjoyment or personal development, often without compensation. Professionals usually compete at higher levels and can earn income through sponsorship, endorsements, and prize money, while amateurs may compete in local leagues or community events. The distinction also involves the commitment and training hours invested, as professional athletes often dedicate their lives to their sport.