Conceptual tools are discussed in context, regarding their innovative use in community ecology. The book presents results from a conceptual analysis of disorder-based entropy (DBE) and energy-based entropy (EBE). DBE is the central disorder scalar in diversity analysis and EBE in holistic energetics. As such DBE and EBE are well conditioned, dialect-defining quantities in statistics. DBE and EBE are not interchangeable functions. Why? DBE is parameterised by probabilities taken from the elementary population level, but EBE takes probabilities form the holistic level of the vegetation stand itself. Seamless adaption of concepts and terminology in stand-level community ecology permeates the entire text. Key references are listed, and a complete step-by-step example included in the Appendices.