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The terms "refugees," "internally displaced persons (IDPs)," and "environmental refugees" refer to different categories of displaced individuals:
$\textbf{Refugees}$: Refugees are individuals who have fled their home countries due to a well-founded fear of persecution, conflict, or violence. They seek refuge in other countries and cannot return safely to their homeland.
$\textbf{Internally Displaced Persons}$ (IDPs): IDPs are individuals who have been forced to leave their homes but have not crossed international borders. They remain within their country's borders and are often displaced due to conflict, natural disasters, or human rights violations.
$\textbf{Environmental Refugees}$: Environmental refugees, sometimes referred to as climate refugees, are people forced to leave their homes due to environmental factors, such as natural disasters, sea-level rise, drought, or desertification. The term is not formally recognized under international law.
