Plant ID plz!!

I'm not sure but the first looks like giant hygro, the 2nd, maybe pennywort or cardamine. Nice of your friend to share, can't hurt to try them whatever they are.
 
First one is hygrophila corymbosa also known as giant hygro. second one i don't know.
 
I agree the 1st one is giant hygro. The 2nd to me, looks like lysimachia nummularia. It's a marginal, and a perennial where I live. Didn't know you could grow it under water, but from a quick search of google, it seems that you can.
 
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