As a lawyer, we often get clients asking us to translate "legalese" for them. Leadership, however, does not require technical terminology. In order to effectively communicate, motivate and empower people, basics really are the best: ask for their input, give them the necessary background information, thank them and admit when you have made a mistake.
In leadership, as in most fields, there's a specialized vocabulary. But unlike the language of most fields, the words that mean the most in leadership aren't technical jargon. They reflect the kind of language that virtually everyone knows and uses--a series of everyday phrases, affirmations, and mantras.