Case markers are grammatical elements used in some languages to indicate the grammatical function of a noun within a sentence. They help clarify whether a noun is the subject, object, or shows possession, among other roles. For example, in languages like Japanese or Korean, case markers are attached to nouns to signal their role in the sentence structure. These markers can take various forms, such as particles or suffixes, and are essential for understanding the relationships between words. In contrast to English, which relies more on word order, case markers provide additional information that aids in comprehension, especially in complex sentences.