This study examines the main terminological concepts, development directions, and organizational forms of modern ecotourism based on comparative materials in English and Uzbek. As ecotourism continues to grow globally, the need for precise and unified terminology becomes increasingly important for research, education, and sustainable practice. The paper analyzes key concepts such as sustainable tourism, nature-based tourism, responsible travel, and community-based ecotourism, highlighting similarities and differences in their usage across English and Uzbek sources. Additionally, it explores the primary directions of modern ecotourism, including biodiversity conservation, cultural heritage preservation, and local community empowerment. Various organizational forms—such as protected-area tourism, rural ecotourism, adventure-based ecotourism, and volunteer tourism—are also discussed. The comparative linguistic approach of the study contributes to a clearer understanding of ecotourism terminology and supports the development of standardized usage in both languages.