Currently, naming conventions are not standardized across the paper industry, and as a result, paper market customers sometimes use terms that are interchangeable. The term “cardboard” is used to describe paper, paperboard, and corrugated products. Here is a comparison breakdown of each product:  - Paperboard is thicker paper. Watch to see how it compares to cardboard. - Laminated paperboard is thicker paper made from multiple plies. - Corrugated is made from multiple plies of paper, including at least one ply which has been mechanically fluted, giving it the distinctive waves in the middle.