stratification

The process leading to the formation or deposition of layers, especially of sedimentary rocks.

A layering of musical texture.

The vertical layering of vegetation in a forest.

Society's categorization of people into socioeconomic strata.

阶层

The process of treating seeds to simulate natural conditions that the seeds must experience before germination can occur, often involving exposure to cold.

A classification or arrangement of things into different categories or groups.