接触

1. Origins, structure, and basic meaning

• Structure: Spelling: 接触. Reading: せっしょく. Core meaning: contact; touch.
• Basic usage: Representative examples: 二つの部品が接触すると音が鳴る / 模型同士の接触を避けて間隔を広げた.

2. Common pitfalls and similar expressions

• Physical contact and interaction
  • 接触 can describe two parts physically touching or a contact relation between entities. Mere proximity does not by itself establish direct contact.