There are words used by some that are not used by other people even among those who speak the same language. Lawyers use terms that are part of their business. Doctors are the same way, and so are economists and educators. It seems that each specialty has its own vocabulary.
One word used by church people is the word sin. Most of us know what sin is, even if we do not use that word. When we can understand, “You done me wrong” then we know the basic definition of the word “sin.”