How can I construct a variable from concatenated text?

If I have a bunch of variables like so:

$WebServerAlphaDescription = "Some interesting stuff about this webserver"

$WebServerBetaDescription = "Some interesting stuff about this webserver"

$DatabaseServerDescription = "Some interesting stuff about this database server"

$ExchangeServerDescription = "Some Interesting stuff about this exchange server"
...

and I have an array that holds the part of the variable name:

myArray = @("WebServerAlpha","WebServerBeta","DatabaseServer","ExchangeServer")

is it possible for me to construct and expand a variable from the components to do something like this:

$serverDescriptions = @()

foreach ($name in $myArray){
$serverDescriptions += $($name)+"Description"
}

PS C:\> $serverDescriptions

Some interesting stuff about this webserver

Some interesting stuff about this webserver

Some interesting stuff about this database server

Some Interesting stuff about this exchange server

...

When I tried doing this I just get the variable names as strings like this:

$WebServerAlphaDescription

$WebServerBetaDescription

$DatabaseServerDescription

$ExchangeServerDescription

...

I want powershell to see them as variable names and expand them instead of as strings. Any ideas on how I can accomplish this?

Any assistance is appreciated!