Both living and non-living organisms are highly different from each other. Living is anything which is made up of cells while non-living is formed by elements, particles, chemicals etc. For example: Humans, animals, insects, plants all are living organisms, they have complex biological makeup of cells but fan, table, refrigerator etc are all machines the non-living which work by performing physical and chemical reactions. But from where do they get the energy? Both living and non-living require energy to do their specific function but the energy for living comes from food like plants prepare their own food, and utilize it, humans animals feed on plant and animal as they are their source of food. Similarly machines get their energy from fuel, oil, electricity etc. Hence the similarity is that they both require energy to carry out their work.