Language proficiency refers to a person's ability to use a language effectively and accurately. This includes skills in speaking, listening, reading, and writing. For example, someone with high language proficiency can hold conversations, understand complex texts, and express their thoughts clearly. It is essential for communication in both personal and professional settings. Different levels of language proficiency can be measured using various frameworks, such as the Common European Framework of Reference for Languages (CEFR). This framework categorizes proficiency into levels, from A1 (beginner) to C2 (mastery). Achieving higher levels often requires practice, exposure, and sometimes formal education in the language.