山岳

1. Origins, structure, and basic meaning

• Structure: 山岳, read さんがく, refers to mountains or mountainous terrain.
• Basic usage: It specifies a geographical area or field of activity in compounds such as 山岳地帯 and 山岳救助.

2. Common pitfalls and similar expressions

• Tone compared with 山
  • 山 is the everyday word for a mountain. 山岳 has a more formal tone suited to geographical descriptions and names of specialized activities.