RF jamming is the intentional transmission of radio signals to disrupt or block wireless communication by overpowering a target frequency with noise or false signals. It can knock out cell networks, GPS, Wi-Fi, and an Unmanned Aircraft System (UAS), and is used both defensively - in electronic warfare and security - and illegally to disable consumer devices.
Electronic jamming is a form of electronic warfare where jammers radiate interfering signals toward an enemy's radar, blocking the receiver with highly concentrated energy signals.