Spermaceti is a complex and unique substance found in the head cavities of cetaceans. It has a waxy texture and is commonly used in the manufacture of candles, cosmetics, and lubricants. For those who prefer not to use the word "spermaceti" due to its association with whale products, there are several alternative synonyms available. Some of these include sperm oil, cetyl palmitate, cetaceum, whale oil, and ambergris. While these words may not be commonly used in everyday conversation, they provide a way to discuss this substance without using the term "spermaceti," which some people may find offensive or unpleasant.