Language rules are guidelines that govern how words and sentences are structured in a particular language. These rules help ensure clear communication and understanding among speakers. They include grammar, punctuation, and syntax, which dictate how words are combined to form meaningful phrases and sentences. Different languages have their own unique set of rules. For example, in English, the subject typically comes before the verb in a sentence, while in Japanese, the verb often comes at the end. Understanding these rules is essential for effective communication and language learning.