Whats the difference of nightshade and deadly nightshade?

Nightshade generally refers to plants in the Solanaceae family, which includes a variety of species, some of which are edible, like tomatoes and eggplants. Deadly nightshade, specifically known as Atropa belladonna, is a toxic member of this family, containing harmful alkaloids that can cause severe poisoning. While all deadly nightshades are nightshades, not all nightshades are deadly nightshades. The key difference lies in the toxicity and the specific species being referred to.