What’s the difference between a brooch and a pin?
All brooches are pins but not all pins are brooches. Strictly speaking, a brooch is a large, ornamental pin used to secure a cloak at the shoulder. The expression is also used for a similar pin worn simply as jewelry, generally by a woman.
Pins and brooches are both decorative pieces of jewelry that attach to clothing with a sharpened metal wire on the back. However, “pins” are the general category for such pieces of jewelry, and “brooches” are a specific type of pin. So all brooches are pins, but all pins are not brooches. Additionally, during the 1930s to 1940s, some brooches were made with clips rather than pins on the back and were called clips.