As such, .NET Framework is huge and full of stars, and it is not easy to discover interesting methods buried inside of it. You can use the next lines to find all methods with a given keyword:
$key = 'Kill'
[System.Diagnostics.Process].Assembly.GetExportedTypes() | Where-Object { $_.isPublic}
| Where-Object { $_.isClass } | Where-Object { @($_.GetMethods() | Where-Object {
$_.Name -like "*$key*" }).Count -gt 0 } | Select-Object -expandProperty FullName
| Where-Object { $_.isClass } | Where-Object { @($_.GetMethods() | Where-Object {
$_.Name -like "*$key*" }).Count -gt 0 } | Select-Object -expandProperty FullName
