Refining
Part of speech: verb
Definition: To purify; reduce to a fine, unmixed, or pure state; to free from impurities. the process of purification of a substance
Example sentence: A non-fiction writer pretty much has the shape of the figure in front of him or her and goes about refining it. A work of non-fiction is not as difficult to write as a work of fiction, but it's not as satisfying in the end.
Purification
Part of speech: noun
Definition: The act or process of purifying.The removal of impurities, a refining process.A religious act in which a defiled person is made clean or free from sin.