Vocabulary at this level includes a wide and varied range of words, phrases, and expressions that allow for fluent and accurate expression in a variety of situations. Speech uses both everyday vocabulary and more specialized terms related to specific areas of knowledge, such as business, science, art, or politics.
Understanding and using idioms, phrasal verbs and sustained expressions makes speech more natural and closer to that of native speakers. Such phrases are easily understood in conversation and are actively used, adding variation and precision.
Active work with synonyms helps to avoid repetition and makes a text or speech richer and more expressive. For example, instead of just 'important', you might choose 'crucial', 'significant' or 'vital', depending on the context.
Developed skills allow you to use words correctly in different contexts, to choose formal or informal style depending on the situation, and to choose the most precise expressions for effective communication.
In addition, at this level, new words are easily understood when reading or listening, and their meaning is determined by context. This is especially important for understanding complex texts and conversations containing unfamiliar or technical terms.
Thus, Advanced vocabulary is not just a large number of words, but the ability to use them accurately and diversely, adapting speech to different situations and contexts.