What is Manual Testing? Advantages and disadvantages of manual testing?

Manual Testing: - Manual testing is a testing technique, where test engineer test the software manually. The test engineer, who carries out all the test cases and executes on the application manually, step by step and indicates whether a particular step was accomplished successfully or whether it failed, performs manual testing. At the time of manual testing tester need only test case and with the information how to execute those test case. Test Complete gives you an opportunity to create and manage manual tests when testing your application. After adding a Manual Testing project item to your project, you can create a collection of steps to be performed when the application is being tested, with a description and detailed instructions for each step. Test case is also written for all type of testing according to test strategy of test plan. Test engineer writes test cases on base of design document of the software. Manual testing is always a part of any testing effort. It is especially useful in the initial phase of software development, when the software and its user interface are not stable enough, and beginning the automation does not make sense.
Advantages:-1. Manual testing can be use in both small and big project,
2. Easily we reduce and added our test case according to project movement.
3. It is covered in limited cost.
4. Easy to learn for new people who are entered in manual testing.
5. Manual is more reliable then automated (in many cases automated not cover all cases)
6. It allows the tester to perform more ad-hoc. In my experiences, more bugs are found via ad-hoc than via automation. And, the more time a tester spends playing with the feature of the software so he gets few user level bugs. Formal Information about Tools and Its Support Languages.Diagram of both manual and automated testingAdvantage and disadvantage of manual and automated testing techniques 
Disadvantages:- 
1. GUI object size difference and color combination etc is not easy to find out in manual testing.
2. Actual load and performance is not possible to cover in manual testing for large number of users.
3. Running test manually is very time consuming job. A typical testing life cycle is as follows: