Cork, for one, is a type of tree bark that is harvested from the cork oak tree and used for a variety of purposes. It is most commonly used as a stopper for bottles and jars, but it can also be used as insulation, flooring, and even fishing floats. Cork is also the name of a COUNTY in Ireland, located in the province of Munster. The COUNTY is known for its rolling hills, lush green landscapes, and picturesque coastline.