In college, I took a class called technical writing. It has been a while, but this is my recollection. Discord is defined as the collection of vernacular and experiences of a group of people. For instance, a programmer might use the phrase "assembly". The layman might think they mean a group of people, but they were actually talking about the computer language. This phrase exists as part of the discord of programmers, and it has its own meaning in the context of other programmers.
The context through which I learned this phrase was something like "when writing a technical document, the writer must consider the discord of his/her audience to be effective". For instance, when writing a manual for a layman, a wise programmer might refrain from using the phrase "assembly" without due explanation. The writer must consider the discord (the experiences, vernacular, feelings, etc) of the audience, or else they may be confused or not understand the document at all.
My question: Is this a correct usage of the word discord? Have I mis-remembered the actual word for this? I do not have access to the original coursework. I have tried several times in past years to research this concept in more detail but I cannot seem to find any data on this. If this is the correct term/definition, then why can't I find any reading on it? Thanks.