stratify

divide society into social classes or castes

• “Income distribution often stratifies a society”

form layers or strata

• “The rock stratifies”

develop different social levels, classes, or castes

• “Society stratifies when the income gap widens”

form, arrange, or deposit in layers

• “The fish are stratified in barrels”
• “The rock was stratified by the force of the water”
• “A statistician stratifies the list of names according to the addresses”

render fertile and preserve by placing between layers of earth or sand

• “stratify seeds”