layer; level; gradation; arrangement of ideas; (a person's) standing
to pile on top of one another; layer; stratum; floor (of a building); story; (math.) sheaf; classifier for layers
next in sequence; second; the second (day, time etc); secondary; vice-; sub-; infra-; inferior quality; substandard; order; sequence; hypo- (chemistry); classifier for enumerated events: time