The word "congeners" refers to substances that are found alongside alcohol in drinks, particularly in distilled spirits such as whisky and brandy. Some common synonyms for congeners include by-products, impurities, contaminants, and additives. These substances can have a significant effect on the taste and complexity of a drink, with some congeners contributing to a smooth finish while others can result in a harsher flavor profile. Other synonyms that may be used to describe congeners include secondary products, impure compounds, and concomitant substances. Understanding the role that congeners play in the creation and enjoyment of various alcoholic beverages can help to enhance one's overall appreciation and enjoyment of these drinks.