| A | B |
| Fill layer | a layer that consists of a color – gradient – or pattern fill |
| Flattening | merging all layers in an image into a single layer |
| Layer styles | special effects you apply to a layer to affect the appearance of the layer’s contents |
| Rasterize | to convert vector content to raster (pixel-based) content |
| Smart filter | a filter applied to a smart object that you can easily adjust or remove |
| Alpha channel | a channel created when a selection is saved |
| Channel | a feature that stores information about an image’s colors or saved selections and masks |
| Mask | an overlay that protects one area of an image so that modifications can be made to another area of the image |
| Quick mask mode | a display mode that makes it easy to add to or subtract from a selection to create a mask |
| Clipping mask | a mask that uses pixels on one layer to define a mask on the layer above |
| Layer mask | a mask that conceals part or all of a layer |
| Vector mask | a mask created using a vector object such as a path or shape |
| Dither | a blend of two colors used to approximate another color |
| Optimize | adjust settings for graphic to maximize quality and minimize file size |
| Slice | a defined region of an image that can have settings independent of those in other regions |