Many times these types of forms are drawn up by lawyers. These forms can be very expensive and are not essential. It is only advisable for those who do not have time or resources to create this document on their own. A commercial lease agreement is different from a residential one. That is, renters have far more latitude such as constructing a building that suits their business but they have far less freedom in terms of what they can do with the property they are renting.
The confidentiality agreement is in many ways the equivalent of a non_disclosure agreement in that it is intended to protect the company from the loss of any confidential information or intellectual property. While the two agreements may be similar in nature, you will find that the major difference between the two are the penalties should an employee breach the contract and divulge any confidential information. The more serious penalties are reserved for a confidentiality agreement and can result in criminal lawsuits and very large fines if not prison sentences.