词路径
- entity
- abstraction
- abstract entity
- psychological feature
- cognition
- knowledge
- noesis
- content
- cognitive content
- mental object
- knowledge domain
- knowledge base
- domain
- discipline
- subject
- subject area
- subject field
- field
- field of study
- study
- bailiwick
- science
- scientific discipline
- natural science
- physics
- natural philosophy
- crystallography
上位词
- natural philosophy
- physics