Threads are associated with a thread group. To start, stop, suspend, or manage the run interval of threads, you must specify the group name. These operations affect all threads in the specified group. The group name is simply a string. Group names have a scope limited to one server; that is, you cannot have two like-named groups in the same server. If two applications use the same group name, their Thread Manager calls affect threads in both applications. You can run different components in one thread group.