Steps

Cantilevered (Floating Step)

Floating from wall, no visible support

Fully Encapsulated Step

Top + riser + sides all wrapped (block look)

Tread + Riser

Top (tread) + front (riser), closed staircase

Tread Only (Open Riser)

Only top surface, open gaps between steps

Stringer / Supported Step

Steps supported by steel/side structure