Capital

From Economypedia.com

Capital is the existing stock of goods produced by human activities and which are to be used later in the production of other goods or services. The term refers to the real physical means of production and not the sum of money kept aside from savings necessary for purchasing real capital.

Capital is categorized into two sections namely 'fixed capital' and 'circulating capital'. 'Fixed capital' refers to durable goods of producers including plant and machinery, buildings, whereas 'circulating capital' means the the stockpiles of semi-finished goods, materials and components used in production.

However, the difference between 'fixed capital' and 'circulating capital' is that of degree and not of kind.