Filling and stroking selections, layers, and paths

You can fill the inside of a selection, path, or layer with a color or pattern. You can also add color to the outline of a selection or path, called stroking.

• Fill with the Paint Bucket tool
• Fill a selection or layer with a color
• Fill the work canvas
• Fill a selection with a pattern
• Stroke a selection or layer with color
• Stroke a path with color
• Draw a circle or square

 community help (adobe.com)