Cognitive Constructs is an app for the iPhone that does just that. You click on words and form phrases. This app includes the ability to type in your own words so if you are jolted by what you create with what is given, you can add on to it with whatever comes to mind.
I use this app as a tool for creating poetry. Check out these screenshots with an example of what you can create.
I recently made an e-book of the same name of some of my creations. You can download a copy at Payhip or visit The Write Queen Store.