Fixed vs Variable Costs. Fixed vs variable, fully allocated, average, marginal and incremental, each of these cost definitions address the need to understand a different facet of production. Fixed costs do not vary with the number of units produced. Variable costs change with production. For example, the rent paid on a factory would be a fixed cost.
mourn. 1  to feel or express sorrow; lament; grieve. 2  to grieve for someone who has died; specif., to manifest the conventional signs of such grief, as by wearing black clothing or a mourning band. 3  to make the low, continuous sound of a dove.
If you mourn something or mourn for it, you regret that you no longer have it and show your regret in the way that you behave. We mourned the loss of our cities. [VERB noun]