A lexical field is a group of words that share a common meaning or relate to a specific topic. For example, the lexical field of animals includes words like dog, cat, elephant, and bird. These words are connected because they all refer to living creatures, making it easier to understand and categorize language. Lexical fields help in organizing vocabulary and enhancing communication. By grouping related words, speakers can convey ideas more clearly. For instance, in the lexical field of emotions, words like happiness, sadness, and anger allow for a more nuanced discussion about feelings and experiences.