• Guard is part of security. This means the constant monitoring of a person or object, that can be seen in its entirety. To secure something therefor requires more knowledge and insight than to guard something.
• Security is the combination of measures, to protect a target against harmful influences. These influences can come from outside, but also from terrorism and organized crime. But also from the inside, for example in case of fraud or embezzlement. Security is a way to lower the risk and make it manageable, while improving safety.