分裂

1. Origins, structure, and basic meaning

• Structure: 分裂(ぶんれつ) means something that was one splitting into multiple parts.
• Basic usage: It covers a group splitting into factions as well as cell division in biology.

2. Common pitfalls and similar expressions

• Splitting compared with 分離
  • 分離(ぶんり) focuses on detaching or separating things that were attached or together. 分裂 emphasizes one entity splitting into multiple parts, as with the group or cell in the examples.