Camps that emerged spontaneously, often with extremely precarious living conditions lacking support structures for residing migrants.

A contract in which local governments partner with private sector companies or non-profit organizations to undertake urban development issues. A related term are public-private partnerships in which private companies are contracted by public bodies (such as local governments) to provide services or implement infrastructural projects.

The use-value of a commodity is defined by the degree it satisfies the needs of its consumer.