Category-Based Count: For a rough estimate, assume you know:
IT Technical: ~500–1,000 words (e.g., “code”, “API”, “pipeline”). Basic Activities/Travel: ~1,000–2,000 words (e.g., “eat”, “bus”, “hello”). Other Categories: ~500–1,000 words (e.g., emotions, work terms). Total estimate: 2,000–4,000 words, typical for intermediate learners in a professional field.