Infectious disease and Meningitis

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

Meningitis and infectious disease are semantically related. In some cases you can replace term "Meningitis" with "Infectious disease", this terms are similar.

Meningitis noun - Infectious disease characterized by inflammation of the meninges (the tissues that surround the brain or spinal cord) usually caused by a bacterial infection; symptoms include headache and stiff neck and fever and nausea.

Infectious disease and meningitis are semantically related. You can use "Infectious disease" instead a noun "Meningitis".