ΔE 37.8, loose: different enough that you should pick on purpose. Moss and Lichen is noticeably lighter, warmer than Green Fluor.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 38). Moss and Lichen is noticeably lighter, warmer than Green Fluor.
The same difference applies the other way round: Green Fluor is noticeably darker, 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 Green Fluor on the colour wheel See Moss and Lichen on the colour wheel
All matches: Green Fluor equivalents · Moss and Lichen equivalents