The term "rich countries" refers to nations with high levels of economic development, advanced infrastructure and a relatively high standard of living for their citizens. These countries typically have strong economies driven by industries such as technology, finance or natural resources, which enable them to generate significant wealth and provide good education, healthcare, housing and other public services to their residents. In contrast, "poor" or "developing" countries are those that struggle with poverty, lack of access to basic necessities, and have weaker economies compared to the richer nations.