ΔE 23.8, loose: different enough that you should pick on purpose. Nurgling Green is noticeably darker, warmer than Light Jade Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Nurgling Green is noticeably darker, warmer than Light Jade Green.
The same difference applies the other way round: Light Jade Green is noticeably lighter, cooler.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Light Jade Green on the colour wheel See Nurgling Green on the colour wheel
All matches: Light Jade Green equivalents · Nurgling Green equivalents