CO2, or carbon dioxide, is a colorless and odorless gas that is a significant contributor to climate change. As increasing amounts of CO2 are continuously being released into the atmosphere, it has become clear that finding alternative ways to describe this gas is essential. Some synonyms for CO2 include carbonic acid gas, aerial carbon, and carbon oxide. Other alternatives include carbonic anhydrite, oxide of carbon, and carbonic acid anhydride. Such synonyms prove helpful in breaking down complicated scientific jargon into more accessible language for the general public. As a result, it becomes easier to understand the dire need for action to curb the emission of CO2 and mitigate its impact on the environment and human health.