2 plants of Christmas Island, Australia

Hello,
Here are 2 plants for which I would like to know the name :
1st one has the upper leaves colored in red, looking like a flower. It was growing wild but it might be an introduced plant ?
2nd was growing in a pot and fairly common in properties (in pots too). It looks like a reduced boab.
Thank you for your help

 

I forgot the main part, sorry. The plants were on Christmas Island, Australia

 

First is most likely a Euphorbia sp. Second looks like an Adenium.

 

Looks like:

1. Euphorbia sp.
2. Adenium obesum, Desert Rose

 

Thank you ery much Junglekeeper.
Following your identification, the euphorbia looks like Euphorbia cyathophora