The term "expense products" refers to items or services that are purchased by a business for use in its operations, but which are not considered part of the company's core assets. These expenses can include things like office supplies, utilities, rent, insurance premiums, and other costs associated with running a business. The term is often used interchangeably with "operating expenses," which refers to all of the costs incurred by a business during its normal operations, excluding long-term investments such as property, plant, and equipment.