Cold plasma refers to plasmas where ions are at room temperature while electrons are energetic enough to sustain the plasma, typically a few electron volts. This contrasts with the plasma found in the sun, which is extremely hot and consists of highly energetic ions and electrons. Cold plasma is being researched for applications in medicine, particularly in low-temperature atmospheric plasma jets. For more detailed information, reviewing articles on Wikipedia about plasmas, including cold plasma, is recommended. Understanding these differences is crucial for various scientific and practical applications.