Carefully selected and well-constructed seams and seam finishes are important—even critical—steps in the construction process. They are basic techniques used in the sewing process. The seam is the basic structural element of a garment or household textile item. It is the means by which two pieces of fabric are joined together. A seam finish is applied to/used on the unfinished seam edge to prevent raveling, curling, or rolling.
Heaton, Linda and Baker, Marjorie M., "Seams and Seam Finishes" (2014). Family and Consumer Sciences Publications. 105.