AHKP

Prime cost refers to the combined form of direct materials, direct labour and direct expenses..
Product costs are those directly related to the production of a product or service intended for sales such as direct labour, raw materials, manufacturing cost , supplies, electricity etc..
Period cost are all other indirect costs that are incurred in production. Such as overhead cost, sales and marketing expense etc.
Sunk cost is the cost that has already been incurred and thus can not be recovered...
Range is the difference between highest and lowest value..
Differential cost refers to the difference between the cost of two alternative decision..
Break even point is the level of activity at which an organization neither earn a profit not incurs a loss. It also refer as the point where total revenue equals to total cost as the point where contribution margin total equals to fixed costs...
Working capital means net working capital which is current assets minus current liabilities....
Opportunity cost refers to the value of benefit sacrificed when one course of action is chosen in preference to an alternative..
Operating expense is an expense that a business incurs through its normal business operation. Such as wages expense, utility expense, advertising expense, office expense etc..
Activity based costing refers to a costing system by identifying individual activities as the fundamental cost objects.