Subfields of Linguistics - Linguists spend their time studying what language is and what it does. Different linguists study language in different ways. Some study the design features that the grammars of all the world's languages share. Some study the differences among languages. Some linguists focus on structure, others on meaning. Some study language in the head, some study language in society. (James Paul Gee, Literacy and Education.
Sales negotiation can be a very formal process. Sales negotiation is a process that involves the deliberation of all details necessary to successfully complete a sale.
In a sales contract, the parties are the seller(s) and buyer(s) of the real estate, who are often called the principals to distinguish them from real estate agents, who are effectively their intermediaries and representatives in negotiation of the price.