stairs; stairway; staircase
class; level; stratum; layer; hierarchy
stage; step; level; rank; order; stairs
(social) class; rank; grade
lower floor; downstairs; bottom of the stairs; foot of the stairs
floor above; floor upstairs
upper floor; upstairs; top of the stairs
preliminary step; first step
upper floor (of a building)
number of stairs or stories (storeys); rank; order
upper floor (of a high-rise building)
floor below; floor downstairs
above-ground floor; ground floor
basement floor; underground floor
stratification; hierarchization; layering; tiering
bottom floor; lowest floor
first system to rank officials into 12 levels (603 CE)
relative rank accorded the gods of Shintoism
all stages; every level; entire sequence
name of a note in a movable do solfège system
height of a storey; floor height