The term ‘depletion’ is used in relation to

Wasting assets are natural resources that are used up over time, such as oil, gas, and timber. They are also known as non-renewable resources.

Fixed assets are assets that are used in the production of goods or services and are not intended for sale. They are also known as property, plant, and equipment (PP&E).

Current assets are assets that are expected to be converted into cash or used up within one year. They include cash, accounts receivable, inventory, and short-term investments.

Intangible assets are assets that do not have physical substance, such as patents, trademarks, and goodwill.

I hope this helps! Let me know if you have any other questions.