A language expert is someone who specializes in one particular language or has a deep understanding of many languages. They may be known as a linguist, polyglot, polylinguist, language enthusiast, philologist, language scholar, language specialist, dialectician, lexicographer, or grammarian. Each of these titles highlights a different aspect of their expertise, ranging from a focus on the structure of language to the nuances of dialects or the development of language over time. No matter the title, a language expert brings their knowledge to bear on a wide range of fields, from translation and interpretation to language education and beyond.