This International Institute for Sustainable Development (IISD) Knowledge Communications Practice Note offers a glossary of terms related to sustainable development communications. The glossary covers: principal distinctions; terminology of knowledge processes; typology of collaborative relationships; and an inventory of communications practices and tools. Examples of this glossary, which is presented in a chart format, include terms such as: Adaptive management; Community of practice; Intellectual capital; K4D: Knowledge for development; Knowledge mobilisation; Appreciative inquiry; and Participatory video, among others.