General synonyms:
* Stratum: This is a more formal synonym that emphasizes the distinctness of the layer.
* Tier: This emphasizes the arrangement of layers in a stacked formation.
* Level: This emphasizes the relative position of a layer in a structure.
* Sheet: This is a synonym that emphasizes the flatness of the layer.
* Coat: This is a synonym that emphasizes the covering aspect of the layer.
More specific synonyms:
* Overlay: This emphasizes the placement of one layer on top of another.
* Underlay: This emphasizes the placement of one layer beneath another.
* Lamination: This is a synonym that emphasizes the process of creating layers.
* Stratification: This emphasizes the layering of geological formations.
Figurative synonyms:
* Facet: This emphasizes the different aspects or sides of something.
* Dimension: This emphasizes the different levels or aspects of something.
* Element: This emphasizes the individual parts that make up a whole.
* Aspect: This emphasizes the different perspectives or viewpoints of something.
The best synonym to use will depend on the specific context of your sentence.