兼用

1. Origins, structure, and basic meaning

• Structure: 兼用 (けんよう) means using one thing for two or more purposes. It appears in management of a room and functions of a garment.
• Basic usage: One room serves for dining and meetings; one outer garment is selected for both rain and cold.

2. Common pitfalls and similar expressions

• Two roles assigned to one room and two functions combined in one garment
  • 部屋を…兼用している describes users assigning two purposes to a space, while 雨具と防寒着の兼用 describes one item's dual function. It does not mean owning two separate items.