前回

1. Origins, structure, and basic meaning

• Structure: In 前回 (ぜんかい), previous 前 and occurrence 回 combine to denote the preceding occasion.
• Basic usage: 前回 is the immediately preceding occurrence of the same recurring event or session.

2. Common pitfalls and similar expressions

• The preceding occurrence
  • 前回より compares with that occurrence; the word does not mean an arbitrary earlier time or the whole past.