Peak oil is a term that describes the point at which global oil production reaches its maximum level and starts to decline. While it's a commonly used term to indicate the finite nature of oil reserves, there are a number of other synonyms that can be used to describe the same concept. Some of the most common alternatives include oil depletion, the end of oil, oil scarcity, fossil fuel decline, and finite oil resources. Others may use terms like oil exhaustion, oil crunch, or oil transition to describe the shift away from reliance on oil towards renewable energy sources and more sustainable practices. Regardless of the terminology used, the need for a transition away from fossil fuels is becoming increasingly critical for the long-term health of the planet and humanity.