What is the Difference between Test Scenarios & Test Cases Document?

Test cases:
                  It is a document. it will describe which item going to be tested and what is the excepted ruselt.
Scenarios:
                  Complete flow of single functionaly is called Scenario.

Testcase = A testcase is a one which checks a functionality of one particular object at a time..A scenario can check functionality of multiple objects..and we can tell this as one business process..we can define a series of test-case executed as one scenario

Test Scenario = Think of a scenario as a workflow. It tests a series of test cases .

Hi friends, can anyone explain me the difference between those...................