ΔE 16.5, loose: different enough that you should pick on purpose. Alizarin Green is a little darker, much more muted than Goblin Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Alizarin Green is a little darker, much more muted than Goblin Green.
The same difference applies the other way round: Goblin Green is a little lighter, much more saturated.
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 Goblin Green on the colour wheel See Alizarin Green on the colour wheel
All matches: Goblin Green equivalents · Alizarin Green equivalents