ΔE 23.2, loose: different enough that you should pick on purpose. Ghost Green is noticeably lighter, much more saturated than N7 Neutral Gray.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Ghost Green is noticeably lighter, much more saturated than N7 Neutral Gray.
The same difference applies the other way round: N7 Neutral Gray is noticeably darker, much more muted.
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 N7 Neutral Gray on the colour wheel See Ghost Green on the colour wheel
All matches: N7 Neutral Gray equivalents · Ghost Green equivalents