The action of undertaking or accomplishing a task. Obsolete.

More generally: the action or an act of making good use of something (in later use esp. one's time); the action or an act of taking advantage of…

The action of extracting or harvesting natural resources from a place; the action of deriving value from a natural resource by harvesting.

The action or process of making the best of something; (also) the action or process of rendering optimal; the state or condition of being optimal.

The action or practice of taking unfair or unethical advantage of a person or thing; = exploitation, n. 1c.

The action of exploiting or developing something; an instance of this. Now rare.

The action or process of optimizing; optimization.