Difference between Test bed and Test Set

Test Set - is nothing but set of test data
Test bed - is test environment
Test Suite - Numbers of test cases to be executed
Test Module - is the piece of develped software delivered to the test team

Test Bed: Test Environment like Configuration of Test Site with proper Web Server, Application server, Database Server, VPN Configuration with Credentials, Application Credentials.

Test Set: Bunch of Test Data. Like
1. Test Set for newly established application.
2. Test Set for one year old application.
3. Test Set for more than 10 yrs old etc..