* Active: This is the most common adjective form, meaning "engaged in action or movement."
* Actual: This means "real, existing, or happening in fact."
* Acting: This adjective describes something related to the performance of plays or films.
Example:
* Active volcano: A volcano that is currently erupting or has the potential to erupt.
* Actual cost: The real cost of something, not an estimate.
* Acting career: A career in the performing arts.
The best choice depends on the context.