embrace · nostalgia

1. Origins, structure, and basic meaning

• Structure: 懐 has 16 strokes, the on-reading かい, and kun-readings including なつかしい and なつく. 懐かしい (なつかしい) means nostalgic or dear.
• Basic usage: 懐かしい expresses fondness evoked by past memories; 懐く (なつく) describes becoming attached to someone.

2. Common pitfalls and similar expressions

• Nostalgia for the past and growing attached
  • 学生時代が懐かしい means feeling nostalgic for school days on hearing the old school song. 懐かしい木の香り refers to the fondly familiar smell of wood at a grandmother's house.
  • 少しずつ家族に懐いてきた means that the rescued dog gradually became attached to the family. 先生に懐くまで refers to the time until a shy child warmed to the teacher.