Common cold and Coryza

Common cold noun - A mild viral infection involving the nose and respiratory passages (but not the lungs).

Coryza and common cold are semantically related in communicable disease topic. In some cases you can use "Coryza" instead a noun phrase "Common cold", when it comes to topics like runny nose, rhinorrhea.

Coryza noun - An inflammation of the mucous membrane lining the nose (usually associated with nasal discharge).

Common cold and coryza are semantically related in runny nose topic. You can use "Common cold" instead a noun "Coryza", if it concerns topics such as rhinorrhea.