Neither plant plant is getting enough light. The Pilea in particular has very elongated stems between the nodes, a sure sign of inadequate light. I suggest pruning back the stems to where the growth is more compact and then provide more light. New growth will be more compact, which is what you want with a Pilea. The coffee plant appears to be in a pot that is too large and that means the soil is not drying out properly between waterings. Excess soil around the roots retains water for too long and causes root rot. Root rot symptoms often mimic excessive dryness symptoms because the roots are no longer absorbing water properly. Will Creed

It reminds me of Lysimachia punctata. You should know soon when it flowers. Here is a link that might be useful: Lysimachia punctata

Thanks for your comments texasflip but I am familiar with Allamanda and its not that. As for the second pic I searched google high & low and couldn't find a match to Mirabilis.

Hello Harold, yes now I remember that the friend who gave it to me called it paper spine cactus. I love its funny look.