集める

1. Origins, structure, and basic meaning

• Structure: 集める (あつめる) is a transitive verb for bringing scattered items or information together. It appears as collection and completed preparation.
• Basic usage: Old stamps are collected during travel; needed materials are gathered before a presentation.

2. Common pitfalls and similar expressions

• Ongoing hobby collection and completed information gathering
  • 集めている is continuing hobby; 集めた completes preparation. Objects 切手を and 資料を select purpose.