Meanings

collection of cargo (esp. produce, etc.)

totalization

aggregation

concentration (on a task)

settlement

collection of letters

convening

convenor

to call together

mustering-out order

call

centralized authoritarian rule

centralization of power

collection of mythology

proper subset

population density

selection (e.g. of poems, texts)

complete works

to gather up

collected waka poems (of a single poet)