Cardboard is a generic non-specific term for a heavy duty paper based product. Paperboard
http://en.wikipedia.org/wiki/Cardboard

cardboard point of purchase, cardboard displays in stock, corrugated point of purchase displays,acrylic displays, cardboard displays
http://www.cardboarddisplays.com/

Ecstatic Sunshine WAY CBR 009: CD www.ecstaticsunshine.com "Ecstatic Sunshine...is one of the best introductions to oddball music you could hope for...guitar melodies--guitar riffs ...
http://www.cardboardrecords.com/

Shopping for cheap or even free cardboard? eHow probably can't help you get it free, but we can help you find the lowest prices online on quality cardboard. Shop, compare and save ...
http://www.ehow.com/shop_cardboard.html

Cardboard boxes are industrially prefabricated boxes, which are primarily used for packaging goods and materials. "Cardboard box" is misnomer, as what most people know as cardboard ...
http://en.wikipedia.org/wiki/Cardboard_box