肘掛け

1. Origins, structure, and basic meaning

• Structure: 肘掛け is read as ひじかけ and is a noun for an armrest supporting the elbow or arm on a chair.
• Basic usage: Use 肘掛けに腕を置く for the resting place and 肘掛けを取り替える for replacing the component.

2. Common pitfalls and similar expressions

• Body part and furniture part
  • 肘 is the elbow, while 肘掛け is the chair component that supports the arm.
• Location and object
  • に marks where the arm is placed, while を marks the armrest being replaced.