Decorations are the things put up to make a place look festive. Christmas decorations, hang the decorations, take the decorations down.
British tradition says they come down by Twelfth Night and leaving them up is unlucky, which nobody can explain and most people follow anyway. In another sense entirely, decorations are medals awarded for service.
1noundecorationsThings put up to make a place look festive.
“We put up the Christmas decorations on the first weekend of December.”
decorations is ornaments.