The paragraph "Installation of the full GNOME desktop environment on Trisquel
8" of https://trisquel.info/en/wiki/installing-gnome-shell says:
The package "gnome" provides the full GNOME desktop environment. You probably
do not want it on top of a Regular/Mini/Sugar edition of Trisquel 8 because
that would mean two programs for most tasks: the GNOME program and the
program you got when you installed Trisquel. Executing 'sudo apt install
gnome' or 'sudo apt install gnome-core' (for a more reduced set of
applications) on a NetInstall makes sense.
The rest of the manual explains how to easily get GNOME Shell, optionally a
few utilities (less than ten additional MB), but not the full desktop
environment.