The Interior Designer and Furniture Designer may share an artistic eye, but their point of view and goals are not the same. The Interior Designer sees a space, a room which has a function such as a living room or a family room or an office. He has a style in mind which relates to the colors and kinds of furniture he will mix to create a room that meets his goals.
The Furniture Designer deals with the construction of particular pieces of furniture, including their possible final location within a room, but focusing on the way in which the particular piece of furniture is constructed, whether of wood, plastic or metal. The Furniture Designer must consider the cost of materials balanced with the use to which the furniture will be put.
Both careers are artistic in nature, with the Interior Designer focusing on the overall look of an assembly of factors including window placement, room size, and style. The Furniture Designer only has a dim view of the final location of a piece of furniture he is designing, and focuses on making that piece meet the design requirements necessary to create a suitable piece of furniture for many possible locations.