Difference between Stratum and Layer

Stratum

Part of speech: noun

Definition: One of several parallel horizontal layers of material arranged one on top of another A layer of sedimentary rock having approximately the same composition throughout Any of the regions of the atmosphere, such as the stratosphere, that occur as layers A layer of tissue A class of society composed of people with similar social, cultural, or economic status A layer of vegetation, usually of similar height.

Layer

Part of speech: verb

Definition: to cut or divide (something) into layersto arrange (something) in layers.

Part of speech: noun

Definition: A single thickness of some material covering a surfaceA (usually) horizontal deposit; a stratum.A person who lays things, such as tiles.A hen kept to lay eggs.An item of clothing worn under or over another.shoot of a plant, laid under ground for growth.

Example sentence: Civilization is like a thin layer of ice upon a deep ocean of chaos and darkness.