What are the differences between white vinegar and white wine vinegar, and how do they affect the flavor of dishes when used in cooking?

White vinegar is made from distilled grain alcohol and has a sharp, acidic taste. White wine vinegar is made from fermented white wine and has a milder, fruity flavor. White vinegar is more pungent and can overpower dishes if used in excess, while white wine vinegar adds a subtle tanginess and depth to dishes without being too harsh.