A grammarian is a person who studies and analyzes the rules and structure of a language. They focus on grammar, which includes syntax, punctuation, and word usage. Grammarians often work in education, publishing, or linguistics, helping others understand how to use language correctly. Grammarians may also create style guides or grammar books, providing resources for writers and speakers. Their expertise is valuable in ensuring clear communication and effective writing. Notable grammarians include Noam Chomsky and Lynne Truss, who have contributed significantly to the understanding of language and grammar.