哀悼

1. Origins, structure, and basic meaning

• Structure: 哀悼(あいとう) is sorrow at someone's death and a feeling of mourning for the deceased.
• Basic usage: It is used for expressing this feeling at a memorial event or offering condolences after hearing news of a death.

2. Common pitfalls and similar expressions

• The object of sorrow compared with 悲哀
  • 悲哀(ひあい) broadly describes sorrow or sadness. 哀悼 focuses on mourning a person's death, connecting with the victims or news of a death in the examples.