The U.S. Code that classifies them for the tax stamp calls them both Silencer and Suppressor. The more the term, as pointed out, “Silencer” is used the more we perpetuate the incorrect facts that a “can” will make a shot silent and “havoc with guns will prevail”… If we want the publics support in getting these devices off the $200 tax stamp and make them more available to shooters we’d be better off calling them what they are “Suppressor”.