What is the Difference Between 'Normal' and 'Regular' Font Weights in Source Hans Sans JP

[Ghoul Fool]

So can anyone actually tell me the documented difference between "Normal" and "Regular" in terms of font weight? See screen shot of Source Hans Sans JP.

..because now font weights are beginning to look like a barista's blackboard. 

<Title renamed by MOD>

[James Gifford—NitroPress]

Looking at the font samples in the Adobe font page, it looks like a steady progression of weight from Light-Normal-Regular-Medium-Bold-Heavy. I see a very slight weight difference for Regular, almost exactly in between Normal and Medium.

All things considered, I'd use Normal for all body text and reserve Regular, if at all, for small text that might reproduce too lightly.

[rob day]

documented difference between "Normal" and "Regular"

Regular is a lighter weight than Normal.

Here ’s Regular in red and Normal in black:

[James Gifford—NitroPress]

Maybe in general (although I'd take nothing for granted in font naming!), or in Western fonts, but not in this case: