Collider

• Static colliders:
  • The GameObject has a collider but no Rigidbody.
• Rigidbody colliders:
  • The GameObject has a collider and a Rigidbody.
• Dynamic colliders: The Rigidbody is dynamic (not kinematic; uses physics engine).
• Kinematic colliders: The Rigidbody is kinematic (kinematic, doesn’t use physics engine).
• Trigger collider
  • Trigger colliders do not physically collide with other colliders; instead, Unity calls a function when other colliders pass through them. https://docs.unity3d.com/Manual/CollidersOverview.html

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• If the object with the Collider needs to be moved during gameplay then
  • also attach a Rigidbody component to the object.
    • set it to kinematic if you don’t want the object to have physical interaction with other objects. https://docs.unity3d.com/6000.0/Documentation/ScriptReference/Collider.html