Distinctions between various competitive exams offered by UPSC primarily revolve around their format, focus, and eligibility criteria. For instance, the Civil Services Examination focuses on a broad range of subjects, while exams like the Indian Forest Service emphasize specialization in forestry and environmental sciences. Different exams also have varying selection processes; some may include personality tests, whereas others might require field-specific knowledge. Understanding these distinctions is critical for candidates to strategize their preparation effectively, focusing on relevant subjects and enhancing prospects based on their individual strengths.