(ecology) a group of interdependent organisms inhabiting the same region and interacting with each other

biome - a major biotic community characterized by the dominant forms of plant life and the prevailing climate

    group     grouping

the body of people in a learned occupation; "the news spread rapidly through the medical community"

legal profession / bar / legal community - the body of individuals qualified to practice law in a particular jurisdiction
health profession - the body of individuals whose work helps to maintain the health of their clients
businessmen / business community - the body of individuals who manage businesses
community of scholars - the body of individuals holding advanced academic degrees
economics profession - the body of professional economists
priesthood - the body of ordained religious practitioners

    occupational group     vocation

a group of people living in a particular local area; "the team is drawn from all parts of the community"

parish - a local church community
speech community - people sharing a given language or dialect
neighborhood / neighbourhood - people living near one another
village / small town / settlement - a community of people smaller than a town
hamlet / crossroads - a community of people smaller than a village
horde - a nomadic community

    gathering     assemblage

a group of people having ethnic or cultural or religious characteristics in common; "the Christian community of the apostolic age"; "he was well known throughout the Catholic community"

convent - a community of people in a religious order (especially nuns) living together
house - the members of a religious community living together
Ummah / Umma / Muslim Ummah / Islamic Ummah / Islam Nation - the Muslim community or people, considered to extend from Mauritania to Pakistan

    people

a group of nations having common interests; "they hoped to join the NATO community"

    world organization     world organisation     international organization     international organisation     global organization

a district where people live; occupied primarily by private residences

uptown - a residential part of town away from the central commercial district
suburb / suburbia / suburban area - a residential district located on the outskirts of a city
exurbia - a residential area outside of a city and beyond suburbia
tenement district - a residential district occupied primarily with tenement houses
warren / rabbit warren - an overcrowded residential area
Georgetown - a section of northwestern Washington, D.C.
Greenwich Village / Village - a mainly residential district of Manhattan

    district     territory     territorial dominion     dominion

common ownership; "they shared a community of possessions"

    ownership

agreement as to goals; "the preachers and the bootleggers found they had a community of interests"

    agreement     accord