Verification
Verification is a static practice of verifying documents, design, code and program. It does not involve executing the code. It is human based checking of documents and files. Verification uses methods like inspections, reviews, walkthroughs, and Desk-checking etc.
Validation
Validation is a dynamic mechanism of validating and testing the actual product. It always involves executing the code. It is computer based execution of program. Validation uses methods like black box (functional) testing, gray box testing, and white box (structural) testing etc.