food waste

reduce, decrease, subtract

food in general; provisions / a specific food / one's diet, what one eats.

(transitive) to improve, to make better / (intransitive) for something to improve on its own

improvement, an action taken to improve / improvement, a spontaneous change for the better

betterment, improvement, amelioration

hood (headwear) / hood of a vehicle (US), the part covering the engine; bonnet (UK) / lens hood

food

needed, necessary

need, necessity