The word 'relace' is generally used to describe the process of replacing a lace in a shoe or a garment. However, there are various synonyms that can be used in place of this word. These include 'rethread', 'repair', 'remedy', 'renew' and 'restore'. 'Rethread' refers to the act of replacing a thread in a material, while 'repair' means fixing something that is broken or damaged. 'Remedy' is used to describe the process of providing a solution to a problem, and 'renew' means restoring something to its original state. Lastly, 'restore' refers to the act of bringing something back to its original condition. All of these synonyms can be used in place of 'relace' depending on the context and the intended meaning.