一周

1. Origins, structure, and basic meaning

• Structure: 一周 is read as いっしゅう and is a noun and する verb for making one circuit or lap around a place or object.
• Basic usage: Going around a pond appears in 池を一周する, while circling the globe appears in 地球を一周する.

2. Common pitfalls and similar expressions

• Completing one circuit
  • It means completing the full route around something rather than covering only part of the way.
• Difference from 一回り
  • The comparison term can also mean one circuit, but it additionally expresses being one size larger or surveying the whole.