stratification

nouns

the act or process or arranging persons into classes or social strata
is derived from
is derived from
is a type of (narrower)
the act of distributing things into classes or categories of the same type
the condition of being arranged in social strata or classes within a group
is derived from
is derived from
forming or depositing in layers
is derived from
is derived from
is a type of (narrower)
(geology) a natural process whereby geological features are modified
a layered configuration
is a type of (narrower)
any spatial attributes (especially as defined by outline)
"he could barely make out their shapes"
the placing of seeds in damp sand or sawdust or peat moss in order to preserve them or promote germination
is derived from
is a type of (narrower)
the act of putting something in a certain place