two or more rungs a stable base two or more side rails hinges at the top and bottom usually made of metal, wood, or plastic non-slip steps or rungs a grip or handle at the top
ladder which has two or more rungs ladder which is a stable base ladder which has two or more side rails ladder which has hinges at the top and bottom ladder which has usually made of metal, wood, or plastic ladder which has non-slip steps or rungs ladder which is a grip or handle at the top