Definations

Acceptance test: Performed by tester whether the software fulfills the
requirement condition or not.
Accessibility test: To check whether the system is accessible by people or not.
Ad hoc testing: Testing without any test conditions.
Alpha testing: Testing performed at developer site by tester without interference of client.
Automated testing: Testing using software using automated tools like
Winrunner, QTP, test directer etc

Bug: Any deviation from client requirement is known as bug. Bub always lurk at the corners.
Beta testing : Testing conducted at the client side without the interference of developer.
Black box testing: Testing performed considering the external
behaviour and internal coding is completely ignored.
Bottom Up testing: its a part of integration testing where the
lowest model is tested first than the upper models.
Boundary value analysis: checks the boundary values.suppose
range is n to m, than there will be 6 possible test case for this.
Branch coverage analysis: testing of each branch at least once
for true or false outcomes.

CMM(Capability Maturity Model) levels:
Clear box testing: Performed to checks internal behaviour
means only coding.
Compatibility testing: The process of determining the ability
of two or more system to exchange information.

Defect: Any undiscovered , undetected or unrecognised bug is know as defect.
Defect density: A metric to calculate the number of defect per thousand lines of code.
Defect seeding: putting up the bugs in the software intentionally to check the efficiency of testing