The document defines 'community' as a group of people sharing common characteristics such as location, identity, or profession and highlights types of communities including location-based, identity-based, and organizationally based communities. It emphasizes the importance of community involvement in disaster management, stating that communities can act as first responders and their knowledge of the local environment is crucial during disasters. Additionally, the document discusses the significance of ethnic and occupational communities in disaster management, as they bring unique knowledge, cultural practices, and values that enhance disaster preparedness and response.