Acetylenes are organic compounds containing triple bonds between the carbon atoms. Some synonyms for acetylenes include alkynes, acetylides, ethynes, and ethine. These compounds are commonly used in the production of plastics, solvents, and synthetic fibers. Acetylenes are also used in welding and cutting torches due to their high temperature flame. Another synonym for acetylenes is ethyne, which is the simplest member of the alkyne family. Ethyne is a colorless gas that was once used in street lighting before being replaced by electric lights. Overall, acetylenes and their synonyms have a variety of important industrial and commercial applications, making them essential compounds in the modern world.