A contour sheet.
The rounded contours of the foothills.
A chair contoured to fit the body.
Contour sheets for a bed.
Behaviors that are within the bounds of what is socially acceptable are examples of behaviors that fit within the contours of society.
The outline of the mountains seen in the distance is an example of the contour of the mountains.
Origin of contour
From American Heritage Dictionary of the English Language, 5th Edition