From what I understand, both of these things inhibit electronic devices from communicating with each other. A scrambler does this by altering the signals sent out by the transmitter device in such a way that corrupts the data the signal is trying to relay.
What about a signal jammer? Does it work the same way? Are both of these devices the same thing?
(Note: I have asked a question on here before that was not related to electrical engineering. If this is another such question, please let me know! I will happily remove it.)