Translation guide
The English word 'layer' can refer to a physical stratum, a conceptual level, or a coating. In Japanese, different words are used depending on the context: physical layers (strata, geological layers), layers in a stack (like clothing, cakes, or Photoshop), coatings (paint, dust), and abstract levels (social class, meaning). The most common and versatile word is 層 (そう), but it is often used in compounds. For counting layers, use 重 (じゅう) or the counter 枚 (まい) depending on what is being layered.
a layer of clothing
the act of layering clothes; a layer can be 一枚 (いちまい)
a layer of paint/dust
coating, film; also 層 (そう) can be used
A distinct level of material, such as rock, soil, or atmosphere, that is part of a larger structure.
The most general word for a physical layer or stratum. Often used in compounds like 地層 (geological stratum) or 大気層 (atmospheric layer).
The geological layers in this area are old.
The ozone layer is being destroyed.
Specifically a geological stratum. Use this when talking about layers of rock or soil in the earth.
One of several items placed on top of each other, often of the same kind, forming a stack.
Can be used for layers in a stack, but often sounds technical. For everyday items like cakes or clothing, other expressions are more natural.
A thin covering spread over a surface.
General word for a coating layer. Can be used for paint, dust, etc.
A level of abstraction, such as a layer of meaning, a social stratum, or a layer in a network model.
Used metaphorically for abstract layers. Common in phrases like 社会層 (social stratum) or 意味の層 (layer of meaning).
層 (そう) is the most general and can be used for physical, coating, and abstract layers. 重ね (かさね) emphasizes the act of piling up and is common for clothing and tangible stacks. 枚 (まい) is a counter for flat objects and is used when counting layers of things like clothes or paper. For digital layers, レイヤー is standard.
While 層 can technically be used for layers of clothing or cake, it can sound overly technical. In casual conversation, it's more natural to use 重ね or simply count with 枚. For example, 'I wore three layers' is better as 3枚重ねて着た than 三層の服を着た.
崖に地層が見える。
You can see the strata in the cliff.
このケーキは三層になっている。
This cake has three layers.
Refers to things piled up or layered. Often used in compounds like 重ね着 (layering clothes) or 二重 (double-layered).
I wore layers of clothes because it was cold.
This box is double-layered.
Counter for flat objects. When counting layers of clothing, sheets, etc., use 枚. For example, 'wear two layers' can be 2枚着る.
I wore two layers of T-shirts.
Loanword from English, commonly used in digital contexts (Photoshop layers, etc.) and sometimes in other technical fields.
Add a layer in Photoshop.
机の上にほこりの層ができていた。
A layer of dust had formed on the desk.
Specifically a coating film, like paint or varnish. More technical than 層.
The paint layer is peeling off.
A thin film or membrane. Can be used for a thin layer of liquid, oil, etc.
A layer of oil is floating on the water.
This poem has many layers of meaning.
He belongs to the upper social layer.
Specifically a social stratum or hierarchy level. More formal than 層 alone.
The gap between social layers is a problem.