Seam.
seam
seam
Seem
Seam (hope you thank me)
Seam
It is seam
The section of a garment or other product where two pieces of fabric have been sewn together is known as the 'seam'.
A quilt.
Seam.
It's woven into cloth - the cloth is then cut & sewn together.
When two pieces of fabric are sewn together a seam is formed.
The homophone for "sown" is "sewn." "Sown" refers to planting seeds, while "sewn" refers to joining pieces of fabric together with stitches.
It is known as patchwork, often used to make a quilt for a bed.