I know that second flower with the thorns, it produces fruit every once in a while, it's about the size of a golf ball, tastes sweet and chalky, not the best fruit in the world, but edible. The skin is a bit white, but a rosy-red when ripe. It's called the "Christ Crown Flower" or the "Euphorbia Milii". Keep up the good work @farjana07! :->