大群

1. Origins, structure, and basic meaning

• Structure: 大群 (たいぐん) combines large 大 and group 群 to denote a large mass or swarm of creatures.
• Basic usage: It describes many birds crossing the sky or a large school of fish moving underwater.

2. Common pitfalls and similar expressions

• The collective noun depends on the animal
  • The same 大群 may be rendered as a flock, school, herd, or swarm according to which creatures form it.