This document discusses definitions, causes, consequences, and challenges related to corruption. It provides multiple definitions of corruption from legal, socio-economic, and anthropological perspectives. Socio-economic definitions view corruption as the abuse of public office for private gain, while legal definitions consider illegal acts to be corruption. The document also discusses forms of corruption like bureaucratic versus political and petty versus grand corruption. Causes mentioned include low economic development, weak institutions, and lack of transparency. Consequences include reduced economic growth and effectiveness of aid. Key challenges to fighting corruption are its contextual nature and difficulty of assessment.