Conceptual mapping is a process of visually representing and organising ideas and relationships between them, creating a concept map. A concept map typically represents ideas as keywords or pictures (often, enclosed in boxes, circles or triangles) and relationships between them as arrows (often, labelled as "causes", "contributes to", "requires", etc.). Concept maps typically have a hierarchical structure, which ideas organised around overarching concepts. Conceptual mapping can be used by individuals and groups. When used by groups, aids to visually represent problems and by reorganising the keywords, pictures and arrows, search for solutions to these problems.