The difference between tonsils and adenoids is that they are different in location and shape, but they have in common that they are lymphatic organs of the pharynx. The adenoids are located in the nasopharynx and are lymphatic organs located at the very back of the nasal cavity; the tonsils are located in the oropharynx and are ovoid in shape. When the adenoids are infected by germs, it may lead to adenoid hypertrophy, which may cause nasal congestion and other symptoms; while when the tonsils are infected by germs, it may lead to inflammation of the tonsils, and the patient may show symptoms such as sore throat and fever. When the tonsils and adenoids are infected with germs, patients should seek medical treatment in time and follow the doctor’s advice.