Nasoendoscopy refers to the medical procedure that utilizes an endoscope to examine nasal passages and sinuses. However, there are several synonyms for this term, including rhinoscopy, sinuscopy, and endonasal endoscopy. These terms all describe a similar diagnostic procedure that enables medical professionals to inspect the nasal cavity and sinuses for any abnormalities or conditions that may require treatment. During nasoendoscopy, a flexible or rigid tube is inserted through the nostril, allowing for a close-up view of the interior structures of the nose and sinuses. Overall, these synonyms for nasoendoscopy are all useful terms to understanding and discussing this important diagnostic tool used in the medical field.