There are several synonyms for the term "small arms trade," which refers to the sale, purchase, and exchange of firearms and associated ammunition to individuals or groups who are not government-based armies. These synonyms include "illicit arms trade," "black market arms trade," "underground weapons trafficking," "illegal gun trade," and "small arms proliferation." The term "small arms" refers to weapons that can be carried and operated by one person, including handguns, rifles, and shotguns. The small arms trade is a major contributor to violent crime, insurgencies, and terrorist activities around the world, making it a highly controversial and heavily regulated industry.