There are 11 types of seams which include: abutted, enclosed, exposed, false french, flat-felled, french, fused, glued, hairline, lapped seam with raw edges, and finally overedged seam.
Wallpaper is called "papier peint" in French. For a computer wallpaper, you can also use "fond d'écran".
The three types of seam are Plain seam, French seam and Ancient or Old German flat seam.
papier peint
An enclosed seam, or a French seam, is a seam that is sewn with the wrong sides of the fabric together. A second seam is usually sewn with the right sides together so that the first seam is enclosed.
To make a French seam you sew your seam right sides together. at 5/8th in.... Then you trim away half of one side of the seam.... Then you press the seam towards the shorter half. Then you fold the longer half over the narrower half and press..... then you stitch up the flat open side..... that makes a double sewn seam called Frenched seaming.
le papier peint
du papier-peint rose
un papier peint celtique
After the seam is sewn, a seam finish can be applied to the outside edges of the seam allowances to keep them looking neat and prevent fraying. Examples of seam finishes are a zig-zag stitch, using pinking shears for a pinked finish, french seams, flat-felled seams, etc.
a curved seam is a seam that is curved
An open seam is a general purpose seam. An open seam is two pieces of fabric sewn together, and then the seam allowances are pressed open, creating a flat and clean seam line on the right side of the fabric.