What is the Difference between project Risk and project Dependency?

The emphasis on project dependencies is on clarity of task inputs necessary to support that task's deliverables. The resulting discussion of input requirements are directly related to risks associated with the ability of that task to do what needs to be done for its required output.

example : You need to dig a whole before you can pour the concrete for foundation. So pouring concrete is dependent on completion of digging a hole here (there are 4 types of dependencies, thats not discribed here), where as if it rains and you are unable to do concreting or dig a hole itself is a risk which can be avoided by taking some actions.

So direct input to produce some deliverable is called dependency and uncertain events that may or may not affect the ability to provide that input when needed is a risk associated to that event.

Hope this helped

Vick