- Yin is feminine, dark, circular and temporal.
- Yang is masculine, light, linear and spatial.
- Space (linear) and Equivalent Space (rotational)
- Time (linear) and Equivalent Time (rotational)
Equivalent space would be "equivalent yang", but equivalent is yin, so equivalent space ends up yin-yang.
Equivalent time would be "equivalent yin", making it "yang-yin."
So that would give me:
- Space: yang
- Time: yin
- Equivalent space: yin-yang
- Equivalent time: yin-yin
Is this too confusing? (It is more generally descriptive of the function, if you understand the symbols behind it. But English is not a gendered language, so the concepts of yin and yang tend to be a bit of a mystery to native English speakers to begin with.)