A cost can be direct or indirect.The classification can change if the cost object changes.

Indirect

Costs or actions that are not directly traceable to a specific product, service, or activity but are necessary for the business to operate.

Direct

Expenses or costs that can be directly traced to a specific cost object, like a product, department, or project.

Cost Object

Anything for which cost data are desired. Examples of cost objects are products, customers, geographic regions, and parts of the organization such as departments or divisions.