ΔE 23.1, loose: different enough that you should pick on purpose. Ghost Green is noticeably darker, much more saturated than White Star.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 23). Ghost Green is noticeably darker, much more saturated than White Star.
The same difference applies the other way round: White Star is noticeably lighter, 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 White Star on the colour wheel See Ghost Green on the colour wheel
All matches: White Star equivalents · Ghost Green equivalents