Is it possible to speak the same language when communicating, yet realize that two distinct languages are actually being spoken?
Imagine a conversation between a lawyer knows not what a farm looks like and a farmer who never visited the city. The lawyer speaks through legal terms and the farmer speaks through farming terms. The lawyer speaks through concepts of law, with expressions carrying very complicated and historic significance, words having legal definitions attached and meaning entirely different things in the farmer's vernacular. The farmer, speaks through the process of seasons, through concepts having to do with life and work on the farm, and the terms used are defined according to what occurs on a farm.
Both men speak a common language, even using a common set of words, yet the meanings, nuances and intentions behind them differ vastly.
Imagine now when an employer speaks with an employee. The employer, assuming it's their business, built firstly in their mind and then brought to fruition, is speaking from a broader and objective perspective regarding the market, mindful of keeping payroll, of the costs involved and of relations with customers and employees. The employee may only be focused on fulfilling their particular job description, navigating the day with customer and product/service, making sure to execute the demands of their job.
There exists a grand chasm between two minds occupying a single plain. People who speak the same language possibly speak that language according to experience, world view, privy knowledge and the assumptions of others.
The man who believes to know his rights may sound like a lunatic while a law enforcer listens to him, even a lawyer. The commodity's trader isn't preoccupied with the intricacies of how a commodity is grown/made, but only focused on how to sell and/or buy that commodity.