Any activity that consumes resources and produces no added value to the product or service a customer receives.

the trait of wasting resources; "a life characterized by thriftlessness and waste"; "the wastefulness of missed opportunities"

a resource in the wrong place

a resource out of place

Anything that uses resources, but does not add real value to the product or service.

Anything we think we no longer have a use for and so throw away

When the relative value of a good is different from that goods marginal cost of production, waste occurs. Goods or resources are wasted when they are allocated to uses which are not the most valuable.

as resource