powershell find alias by keyword

demo.ps1

# find DisplayName related to 'alias'
Find-Alias alias

find-alias-full.ps1

function Find-Alias {
    param (
        $KeyWord
    )
    return Get-Alias | Select-Object DisplayName | Select-String $KeyWord
}

find-alias.ps1

function Find-Alias {
    param (
        $KeyWord
    )
    
    return alias | select DisplayName | sls $KeyWord
}