In modern clothing and fashion design, a button is small fastener, most commonly made of plastic, but also frequently of seashell, which secures two pieces of fabric together. In archaeology, a button can be a significant artifact. In the applied arts and in craft, a button can be an example of folk art, studio craft, or even a miniature work of art.
I sew buttons to quilts! It amazes me that this small item can have a big visual impact on a project.