>>1512100>which is the best outdoor knife in every field?
Mora.>so called special knives for outdoor, hiking, hunting, bushcraft and survival? That's a marketing gag, isn't it?
not completely. For hunting, you need a wide bladed knife (for causing the lung to collapse on the first stab when dispatching a wounded animal) and possibly a thin stabbing knife (for cutting the spine on a wounded animal - Moras can be used for this). If you want to use the skin, you also need a skinning tool, which is usually a slightly blunt blade with a rounded point, as sharp points cut into the skin to quick.
for bushcraft, you might need different knives depending on what you want to do. carving spoons or bowls for example requires a curved spoon knife (or an adze). For rough work, a long, heavy knife or a hatchet speeds things up massively but isn't completely necessary. if you're working a lot with thorny vines, a forward curving blade like a billhook is also a good idea to avoid getting your hands scratched up from holding the vines in place.
tl;dr: if you want to do everything, you'll need several knives. If you're just doing simple, non-specialized work, a mora and a widebladed hunting knife should suffice