The difference between lung nodule and lung cancer is different name and different scope. 1. Different names: lung nodules are called nodules when their nature is not clear, and lung nodules can be called lung cancer when they are determined to be malignant. 2. Different scope: Lung nodules include a wide range, including lung cancer, lung fibroma, lung lipoma, lung malformation, nodular disease, sarcoidosis, etc. Lung cancer includes squamous cell carcinoma, large cell carcinoma, small cell carcinoma, adenocarcinoma of the lung, etc. People with lung nodules or lung cancer need to actively seek medical treatment, and patients should not use medication on their own to avoid adverse results, but should be treated according to standardized treatment under the guidance of physician’s interview.