入口

1. Origins, structure, and basic meaning

• Structure: 入口 is read いりぐち and means the place where one enters a building or space.
• Basic usage: It is used for giving one's name at a building entrance or describing a grass-covered cave entrance.

2. Common pitfalls and similar expressions

• Reading 入口 and 出口
  • The way in is 入口(いりぐち), and the way out is 出口(でぐち). Both words read 口 as ぐち.