Carbon capture and storage (CCS) is a process that involves capturing carbon dioxide (CO2) emissions from industrial processes and storing them underground. However, there are several synonyms for CCS that are often used interchangeably, including carbon capture, carbon capture and use, and carbon sequestration. Carbon capture refers to the process of capturing CO2 emissions, while carbon capture and use (CCU) involves converting them into useful products such as fuels and chemicals. Carbon sequestration, on the other hand, refers to the storage of CO2 in underground reservoirs, such as depleted oil and gas fields or saline aquifers. These terms are all important in the fight against climate change, as they offer various strategies for reducing greenhouse gas emissions and mitigating their impact on the environment.