Adenoid tumor is a type of tumor that develops in the adenoid tissues of the body. It is a rare condition, but it can cause various complications if left untreated. Some common synonyms for adenoid tumor include adenocarcinoma, adenoma, benign neoplasm, and malignant tumor. Benign neoplasm refers to a non-cancerous tumor, while malignant tumor is cancerous, and can spread to other parts of the body. Adenocarcinoma is a cancerous tumor that develops from glandular cells, while adenoma is a benign tumor that originates from glandular cells. Identifying the type of tumor is crucial for determining the right treatment plan.