This document discusses definitions and theories of globalization. It begins by examining definitions of globalization from various scholars, which can be broad and inclusive focusing on shrinking distances, or narrow and exclusive focusing on changes to production and the state. The document then explores metaphors of globalization as either solid or liquid, referring to barriers versus ease of movement. It analyzes theories of globalization as relating to culture, economics, and politics, and whether globalization leads to homogeneity or heterogeneity. The dynamics of global and local culture are also examined, including differentialism, hybridization, and convergence.