Difference between Verification & Validation?

Verifiaction:

• Means are we doing right thing.i.e we have to check whether we are implementing right process.  
• It is the examination of the process and checks r we building the product right? 
• It involves reviews and meetings to evaluate documents,plans,code,requirement and specification.
• This can be done with 
• checklist,
• Issues lists and 
• Walkthroughs.

Validation:Means are we doing things right.i.e we have to check whether we have developed a software as per the client requirement.