Word Network: 免疫力

Vaccine.

Infectious disease.

Microscopic single-celled organisms that can be found everywhere, including inside the human body. While some cause diseases, many are beneficial for health and the environment.

A microscopic parasite that can infect living organisms and cause disease, or a malicious software program designed to damage computer systems. In Japanese, it is used identically for both biological and digital contexts.

Health or a state of being physically and mentally sound. It can function as both a noun referring to the concept of health and as a na-adjective to describe something as being healthy or good for the body.

A general term for an illness, sickness, or disease affecting the body or mind. It is used both for minor ailments like a cold and for serious chronic conditions.