Community: in the sense relevant here, a structure of human interaction in which people care about, and, where necessary and possible, care for, one another, and, too, care that they care about one another.
Source: ‘What is Good? What is Bad? The Value of All Values across Time, Place and Theories’ by John McMurtry, Philosophy and World Problems, Volume I-III, UNESCO in partnership with Encyclopedia of Life Support Systems: Oxford, 2004-11.
A specific group of people, often living in a defined geographical area, who share a common culture, values and norms, are arranged in a social structure according to relationships which the community has developed over a period of time. Members of a community gain their personal and social identity by sharing common beliefs, values and norms which have been developed by the community in the past and may be modified in the future. They exhibit some awareness of their identity as a group, and share common needs and a commitment to meeting them.
Reference: modified definition
In many societies, particularly those in developed countries, individuals do not belong to a single, distinct community, but rather maintain membership of a range of communities based on variables such as geography, occupation, social and leisure interests.