what is verification testing and validation testing with examples

Example 1: validation testing vs verification testing

Validation is the process, whether we are 
building the right product  to validate
the product which we have developed
is right or not.(software testing)

Verification is the process, to ensure that
whether we are building the product right 
to verify the requirements which we have
and to verify whether we are developing the 
product accordingly or not.(review walktrough)

Example 2: verification in testing

Verification is the process, to ensure that
whether we are building the product right 
to verify the requirements which we have
and to verify whether we are developing the 
product accordingly or not.