固有

1. Origins, structure, and basic meaning

• Structure: 固有 (こゆう) describes something inherent or particular to a given entity.
• Basic usage: A region retains its distinctive expression; proper names for plants are compiled into a list.

2. Common pitfalls and similar expressions

• Expression distinctive to a region and name identifying an entity
  • 固有の言い回し marks a regional characteristic, whereas 固有名 is a name distinguishing an individual entity. The latter does not necessarily mean a scientific name.