Meanings

seismic intensity scale

pent roof built atop the stairs of a shrine or a building in a classic aristocratic villa

double-decker bus

class system

middle class

Beaufort scale (of wind force)

exploiting class

ordination (esp. Catholic)

exploited classes

noble class

all stages

capitalist class

developmental stage

back stairs

floor above

floor below

bottom floor

social class

trophic level

gallows