Powershell 2012R2 Install Role when you don't know exact name

So I am still studying for 70-410. I am trying to do everything from Powershell that I do from GUI. Here is a big stumbling block for me.

How do you install a role when you don't know exactly how it is spelled. I refuse to find the spelling for hyper-v role online, that wouldn't help me for the next role I want to install that I don't know exact naming.

I am trying to get the powershell help system to list the names of available roles so I can complete the command  PS:>install-windowsfeature -name -includemanagementtools

I could probably setup the install through server manager,export the xml and pull the name out of there, but then I'd have to use the gui which is exactly what I am trying to avoid