When we talk about building community, we start by acknowledging that many of us live in multiple communities. A community is a network of people who share things in common.
Source: http://www.networkweaver.blogspot.ca/2011/07/5-kinds-of-communities.html
Neighborhoods, villages, and regions are communities of place. We share common geographies, resources, issues, and possibilities.
Families and ethnicities are communities of past. We share common heritages, languages, cultures, ancestors, and roots.
Companies, organizations, and institutions are communities of purpose. We share common mission, vision, goals, commitments, and interests.
Religious and spiritual traditions, political ideologies and worldviews are communities of perspective. We share common beliefs, stories, and values.
Professional disciplines, crafts, and careers are communities of practice. We share common types of work, knowledge, and learning.
