What is: Stock ?

This term has five meanings. They are;
Wastepaper
Board or a paper that is in hand during the inventory process.
A board or a paper that has been set aside for a particular use and is awaiting the conversion or printing process for that use to be achieved.
A processed pulp which awaits the only dilution in other for a paper to be formed.
Any stage during the manufacture of a wet pulp is a stock.