発売

1. Origins, structure, and basic meaning

• Structure: 発売 (はつばい) denotes the launch or start of sales for a product.
• Basic usage: 来月発売される schedules a dictionary to go on sale; 発売日 names the date sales begin.

2. Common pitfalls and similar expressions

• Passive release and 発売日
  • The product is the subject of 発売される, while adding 日 creates release date; the emphasis is on the start of availability.