What describes a state of being free from illness or injury?

The term "health" refers specifically to a state of being free from illness or injury. It encompasses both physical and mental aspects of well-being, indicating that an individual is in a condition that allows for the absence of disease and conditions that could hinder normal functioning. This definition aligns closely with the overall concept of health as recognized in medical and health contexts, emphasizing the importance of avoiding ailments and sustaining adequate functioning of the body.

The other terms, while related, do not focus specifically on the absence of illness. "Wellness" often refers to a more holistic approach to health, incorporating emotional, social, and environmental dimensions, beyond merely the absence of disease. "Strength" is primarily associated with physical capability and muscle power, while "fitness" relates more to physical activity levels and the ability to perform physical tasks effectively. Thus, while all these terms contribute to the broader concept of health, "health" is the most accurate descriptor for the condition of being free from illness or injury.