The concept of care is probably one of the least understood ideas used by professional and nonprofessional people, yet it is probably one of the most important concepts to be understood by human groups. It is a word with multiple social usages in the American culture, and has other meanings in other world cultures. The terms care, caring, and nursing care have both symbolic and functional meanings as they are used by caregivers and care-recipients. Nursing care also has a general, special meaning to nurses, and is often taken for granted in nurses' thoughts and action patterns. It is time that we study the implicit and explicit meanings associated with the concepts of care and caring so that we can reduce their ambiguities. Furthermore, the humanistic, scientific, and linguistic meanings related to nursing care and caring behaviors in any culture remain a most fascinating area of study for nurses.