Most cabinets are made from hardwoods, but to reduce costs, these hardwoods are often applied as veneers over a substrate, such as plywood. Wood warps easily as its moisture content changes. That's why it's important that the wood be finished on all sides before it leaves the factory.
remedy (plural remedies) Something that corrects or counteracts. (law) The legal means to recover a right or to prevent or obtain redress for a wrong.
When you do poorly in a subject and get sent to a class that focuses on basic concepts and better study habits, you are taking a remedial class. If you know that a remedy is a type of medicine, then you have a clue to the meaning of remedial. Like a remedy, remedial classes are supposed to improve you, specifically in school subjects that you haven't done well in. Lately, the term is most often used to describe courses given to students who are not prepared for regular work. New college students often have to take remedial classes before they can begin actual university-level courses.