To enhance means to improve something or make it better than it was before. When you enhance a photograph, you might adjust the brightness or colors to make it look more vivid. When a chef enhances a dish with fresh herbs, those herbs bring out flavors that were already there but needed a boost.

Enhancement doesn't mean changing something completely or fixing what's broken. It means taking something that already works and making it stronger, clearer, or more effective. A teacher might use diagrams to enhance her explanation of how volcanoes work. Special effects enhance a movie by making the action more exciting. Athletes enhance their performance through practice and training.

The word suggests adding something valuable without losing what made the original good in the first place. When you enhance your vocabulary by learning new words, you're not replacing the words you already know. You're adding to them and becoming a more expressive communicator. Think of enhancement as turning up the volume on what's already good, bringing out the best qualities so they shine even brighter.