How to distinguish property, family Committee, neighborhood Committee, community and neighborhood Committee?

A property management company is a unit hired by residents, owners' committees or developers in the name of the owners, which is dedicated to the daily management of the community for residents and owners, such as doorman, sanitation, receiving and dispatching, etc. Community neighborhood committee is an organization under the subdistrict office, which belongs to the self-governing mass organization of residents. It generally has the relevant functions of acting as an agent for the government, especially an organization that performs some social obligations or rights for residents. It can be simply understood as the smallest government agency.