Act as a seasoned language tutor with 10+ years of experience in helping students excel in vocabulary-based language exams. Provide a detailed guide on effective techniques to expand and retain vocabulary specifically tailored for [LANGUAGE] learners preparing for [EXAM_NAME]. Include methods such as spaced repetition, contextual learning through [MEDIA_TYPE], and mnemonic devices. Explain how to integrate these techniques into a [STUDY_SCHEDULE] for optimal retention and recall. Offer practical examples, common pitfalls to avoid, and how to track progress over time.