cooperation

• Singing from the same hymn sheet

  To be in complete agreement and have the same understanding and objectives as others in a group or project.

• Chip in

  To contribute money, effort, or an item to a shared purpose or collective fund.

• Shoulder to shoulder

  To stand or work very closely together, often in unity, support, or solidarity towards a common goal.

• Lend a hand

  To offer assistance or help someone with a task.

• Pitch in

  To contribute effort, time, or money to a shared task or goal, often spontaneously.

• Put one's shoulder to the wheel

  To apply concerted effort and work hard to help achieve a difficult task or common goal.

• Pull together

  To cooperate and work as a united team to achieve a common goal or overcome a difficulty.

• Join forces

  To combine efforts, resources, or capabilities with another person or group in order to achieve a shared objective.

• Side by side

  Next to each other, often implying closeness, comparison, or simultaneous action.