The variety of terms is explained by the English-language terms commonly used in the electronics industry, which are often mixed with German terms or used synonymously. In some cases, manufacturers have also introduced artificial terms to better distinguish themselves from competitors. Here are the most important examples:Double layer capacitors (DSK) are referred to synonymously as:EDLC (Electric Double Layer Capacitor)Supercapacitors = SupercapsUltracapacitors = UltracapsGoldcap [Panasonic]Boostcap  [Maxwell]Greencap  [Samwha]PURIXEL  [Pureechem] for supercap cellsPURETRON  [Pureechem] for supercap modules