Working together is cooperation. Thanks to the cooperation of the parents, teachers, and students, the end of year school dance rocked the house without rocking the boat.

If you break apart cooperation you see co which means together and operation which is a project or job. When you practice cooperation you are working together on a job or project. Cooperation can sometimes be hard to come by, which is why when someone does a lot of it, it's nice to say thank you.

Definitions of cooperation
  1. noun
    the practice of cooperating
    “economic cooperation
    “they agreed on a policy of cooperation
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    type of:
    pattern, practice
    a customary way of operation or behavior
  2. noun
    joint operation or action
    “their cooperation with us was essential for the success of our mission”
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    competition, contention, rivalry
    the act of competing as for profit or a prize
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    cooperative work done by a team (especially when it is effective)
    abidance, compliance, conformation, conformity
    acting according to certain accepted standards
    coaction, collaboration
    act of working jointly
    collaboration, collaborationism, quislingism
    act of cooperating traitorously with an enemy that is occupying your country
    compromise, via media
    a middle way between two extremes
    concurrence, concurrency
    acting together, as agents or circumstances or events
    rapprochement, reconciliation
    the reestablishing of cordial relations
    self-sacrifice, selflessness
    acting with less concern for yourself than for the success of the joint activity
    allegiance, commitment, dedication, loyalty
    the act of binding yourself (intellectually or emotionally) to a course of action
    the act of representing; standing in for someone or some group and speaking with authority in their behalf
    abnegation, denial, self-abnegation, self-denial, self-renunciation
    renunciation of your own interests in favor of the interests of others
    loyalty and commitment to the interests of your own minority or ethnic group rather than to society as a whole
    a solemn commitment of your life or your time to some cherished purpose (to a service or a goal)
    compliance with formal rules
    acting in conformity
    honoring, observance
    conformity with law or custom or practice etc.
    conformity or harmony
    commitment to some purpose
    the act of enlisting (as in a military service)
    loyalty or allegiance to a cause or a person
    proportional representation
    representation of all parties in proportion to their popular vote
    type of:
    group action
    action taken by a group of people
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