Of course we invent new words all the time, but the downside to using specialized jargon is that many people won't understand you. Many good writers will intentionally avoid obscure vocabulary to reach a larger audience.

This is a judgment to be made on a case-by-case basis. For example, when writing programs, I don't think the word "monoid" is useful enough to be worth explaining, so I would avoid using it in API's or documentation and see if I can get the point across in some clearer way.