Pinch bars are tools that are used for prying heavy objects or lifting. There are several synonyms for pinch bars, including pry bars, wrecking bars, crowbars, and jimmy bars. These tools are crucial in construction and demolition because they leverage the user's strength to move heavy objects. Pry bars, for instance, come in different lengths and are used to apply force to objects weighing hundreds or thousands of pounds. Wrecking bars and crowbars are shortened versions of pry bars and used for lighter tasks. On the other hand, a Jimmy bar is a small pry bar that can be used for finer tasks such as adjusting door hinges. All these tools, regardless of their name, are used for the same purpose and can be interchangeable.