Other software test terms

Exploratory Testing - is an informal method where the tester determines the procedure and data for the test as it is executed, aka Ad Hoc Testing.  Sometimes a drive list or checklist is used to make sure certain high-level objectives are covered.  Some method of documenting the test for recreation of defects and test learning is recommended (video recording, drive list shorthand, etc.). 

Happy Path Testing - is the execution of tests that do not include error paths (or negative tests).

Monkey testing is a type of exploratory testing with random, ad hoc, or unexpected data and events.