"Re-fines" is a term that refers to the second refining process of crude oil. It is important as it helps to remove impurities and further purify the oil, making it suitable for use in various industries. Synonyms for "re-fines" include "reprocesses," "revamps," "retreats," and "reworks." Each of these words captures the essence of the refining process, which involves further purification or improvement of a product. Other synonyms include "polishes," "purifies," "filters," and "cleanses." These words emphasize the refining process's goal, which is to remove impurities and enhance the quality of the product. Choosing the right synonym can help to communicate your ideas more effectively and make your writing more engaging.