Infectious mononucleosis and Infectious disease

Infectious mononucleosis noun - An acute disease characterized by fever and swollen lymph nodes and an abnormal increase of mononuclear leucocytes or monocytes in the bloodstream; not highly contagious; some believe it can be transmitted by kissing.

Infectious disease and infectious mononucleosis are semantically related. In some cases you can use "Infectious disease" instead a noun phrase "Infectious mononucleosis".

Infectious disease noun - A disease transmitted only by a specific kind of contact.

Infectious mononucleosis and infectious disease are semantically related. Sometimes you can replace phrase "Infectious mononucleosis" with "Infectious disease", this phrases are similar.