Capacitor
A capacitor is a device for accumulating electric charge.
1) a device for accumulating electric charge, usually consisting of two conducting surfaces separated by a dielectric
2) a device consisting of two or more conducting plates separated from one another by a dielectric nonconductor, as glass, mica, plastic, or dry air, used for storing an electric charge; condenser.
Capacitor is a device which can store eletrical energy
at the required value.
Collins English Dictionary “Repagination”, 2018 https://www.collinsdictionary.com/dictionary/english/repagination
Nick Brieger, Alison Pohl: Technical English Vocabulary and Grammar.