一括

1. Origins, structure, and basic meaning

• Structure: 一括 is read いっかつ. It means handling multiple items together, all at once or in bulk.
• Basic usage: It describes storing collected photographs together and paying a fee in one lump sum.

2. Common pitfalls and similar expressions

• Handling items together
  • 写真を一括して同じ箱に保管した means storing all the collected photographs together in one box.
• Lump-sum payment
  • 参加費は受付で一括払いする means paying the participation fee all at once rather than in installments.