One of the main directions of social differentiation of language is the language peculiarities of people related to the different professions. Any profession has its specific vocabulary. It should be noted that the development of the professional vocabulary in all languages of the world does not manifest itself in the same form. https://www.bekindtopets.com/hot-savings-Seat-Post-for-the-ActiveCare-Spitfire-1310-1410-Used-mega-pick/