A demonstration is a show or display that can take many forms, including:

• Product demonstration: A sales or marketing presentation that showcases the idea, performance, method, or features of a product.

• Technology demonstration: An incomplete version of a product used to showcase its potential.

• Scientific demonstration: A scientific experiment used to illustrate principles.

• Demonstration (teaching): A method of teaching by example rather than simple explanation.

• Demonstration (learning): Imitation by observing a demonstration example.

• Demonstration (political): A political rally or protest.

• Demonstration (military): An attack or show of force on a front where a decision is not sought.

• Demonstration of force: The show of armed force or preparedness.

• Exhibition game: A sporting event with no competitive value to any competitor.

A demonstration can also refer to a march or gathering of people to show their opposition to or support for something. It can also be a way of expressing a feeling or quality. For example, a demonstration of grief is an outward expression of sadness or mourning.