Definition of Supply:
Supply is of the scarce goods. It is the amount of a commodity that sellers are able and willing to offer for sale at different price per unit of time.
Meyer defined supply in following words:
“Supply is a schedule of the amount of a good that would be offered for sale at all possible prices at any period of time; e.g., a day, a week, and so on”.
Definition of Stock:
“Stock means the total quantity of a commodity which exists in a market and can be offered for sale at a short notice”.
Difference between Supply and Stock:
Here it seems necessary that the meanings of the terms ‘supply’ and ‘stock’ may be made clear as they are often confused by the readers. Supply refers to that quantity of the commodity which is actually brought into the market for sale at a given price per unit of time. While Stock is meant the total quantity of a commodity that exists in a market and can be offered for sale at a short notice.
The may or may not be equal if the commodity is perishable, like vegetables, fruits, fish, etc; then the supply and stock is generally the same.