A furniture finisher is a professional who specializes in the finishing of furniture. They are responsible for applying stains, varnishes, and other finishes to furniture pieces to enhance their appearance and protect them from damage. A STAINER is a type of furniture finisher who specializes in applying stains to furniture. They use a variety of techniques to apply the stain, such as brushing, spraying, or wiping, and they may also mix different colors of stain to create unique effects.