Jargon may serve the purpose of a "gatekeeper" in conversation, signaling who is allowed into certain forms of conversation. Jargon may serve this function by dictating to which direction or depth a conversation about or within the context of a certain field or profession will go.[25] For example, a conversation between two professionals in which one person has little previous interaction or knowledge of the other person could go one of at least two possible ways. One of the professionals (who the other professional does not know) does not use, or does not correctly use the jargon of their respective field, and is little regarded or remembered beyond small talk or fairly insignificant in this conversation. Or, if the person does use particular jargon (showing their knowledge in the field to be legitimate, educated, or of particular significance) the other professional then opens the conversation up in an in-depth or professional manner.

https://en.wikipedia.org/wiki/Jargon