Professional Vocabulary in modern english language CONTENT INTRODUCTION………………………………………..............................2 1. Historical Development………….…………………………………………..4 2. Professional Vocabulary in Different Fields……...……………………….....10 3. Modern Trends in Professional Vocabulary………………..…………..........17 4. Learning and Teaching Professional Vocabulary……………………………24 CONCLUSION……………………………………………………………...28 REFERENCES………………………………………...…….……………...30