How to report defects?

There are two methods for defect reporting

See also:
How can I view all defects?
How to assign a defect?
How to Close a Defect?
How to Resolve a Defect?
How to report a defect after test is complete?
How to report defects?
How to Reopen a Defect?
How to sort and filter defects?
How to filter and assign defects?