What are the inedible fruits?

Most of the nuts are this way. Pistachio, Almond, Walnut, etc. Nobody actually eats the fruit - just the seed. Mistletoe and Soapnut are also inedible.

All berries of the Nightshade (potato) family, including common potato fruit (what we eat is the tuber- part of the root storage system) are deadly. Yew, holly and ivy berries are also...

Cashew nuts.

No! The kiwi fruit is sold in many supermarkets around the world in many countries, although they crop under different names.

yes