Knöpfchen
Knöpfchen is a German noun forming the diminutive of Knopf, meaning a small button. The term is used for a button that is comparatively tiny, decorative, or simply viewed as a small control element. The stem of the word changes from Knopf to Knöpf- when the diminutive suffix -chen is added, reflecting the umlaut shift common in German stem vowels.
Knöpfchen can refer to various kinds of small buttons. In clothing and upholstery, it denotes tiny decorative
The term is primarily informal or colloquial. It is well understood in standard German but is less