Parchment paper is a type of grease-resistant paper commonly used in baking, cooking and food prep. However, there are several synonyms that are commonly used for the same purpose. One such synonym is baking paper, which is used to line baking pans or cookie sheets to prevent food from sticking. Another synonym is wax paper, which is similar to parchment paper but is coated with paraffin wax and is not suitable for oven use. Greaseproof paper is another synonym that is often used for baking and cooking, and it has a similar function as parchment paper. Finally, silicone baking mats are also commonly used as a substitute for parchment paper, and they are reusable and dishwasher safe.