Acetylene-weld is a term used to define the welding process that uses acetylene gas as a fuel. However, there are synonyms that are often used for this term, such as oxyacetylene welding, gas welding, and oxy-welding. Oxyacetylene welding is perhaps the most commonly used synonym for acetylene-weld, as it combines the oxygen and acetylene gases to create a hot flame used for welding. Gas welding is another synonym that is used to describe the same process, given that acetylene welding is one of the most popular gas welding techniques used by metalworkers and hobbyists alike. Finally, oxy-welding is another synonym that is used to describe the process of acetylene-welding, given that it uses oxygen and acetylene gases to create a flame used for welding.