**1. Introduction**

The aim of this chapter is to critically reflect on definitions used in different disciplines during the procedure of risk management. Knowledge management is an important part of risk management and can be defined as a collaborative and integrated approach to the creation, capture, organization, access, and use of an intellectual asset [1]. This definition underlines the importance of knowledge management in risk management when different disciplines work together to identify the hazard, assess the risk, and finally predict mitigation mechanism [2]. To facilitate communication between different disciplines, we compared how risk management was approached in different disciplines. We recognized that harmonization of these approaches or definitions would be contraproductive as it would undermine the variety of knowledge and the tasks and perspectives of the different disciplines during the process of risk management. We, therefore, suggest to widen the understanding through appreciation of these differences between disciplines and not to harmonize definitions.
