orphan · alone

1. Origins, structure, and basic meaning

• Structure: 孤 is associated with being alone or lonely; its on-reading is こ.
• Basic usage: 孤独(こどく) means loneliness or solitude, while 孤立(こりつ) means isolation.

2. Common pitfalls and similar expressions

• Feeling lonely and losing connections
  • 孤独を感じる means feeling lonely. Being alone and experiencing loneliness are distinct.
  • 孤立 applies to a village cut off by heavy snow and to someone isolated within a team. It can describe both physical separation of a place and loss of social connections.