因縁

1. Origins, structure, and basic meaning

• Structure: 因縁 is read as いんねん and is a noun for a connection or bond, including an old ill-fated relationship between people or families.
• Basic usage: A bitter family connection across generations appears in 何代も続く因縁, while a mysterious bond with an elder appears in 老人との不思議な因縁.

2. Common pitfalls and similar expressions

• Bitter and mysterious bonds
  • Depending on context, it can denote a hostile relationship or a mysterious connection formed by chance.
• Difference from 縁
  • Compared with the broad word for a connection, this term can more strongly suggest a past history or longstanding conflict.