Test case terminology mostly used for Manual Testing 
whereas Test Script mostly used for Automation Testing 
• A test case is a documentation which specifies input 
values, expected output and the preconditions for executing 
the test. It's also a layout of the low-level details on 
how to test the scenario 
• A test script in software testing is a set of 
instructions that will be performed on the system 
under test to test that the 
system functions as expected.