PowerShell defines short forms forms for the long hyphen separated commands it provides. You can see the current aliases for you system by entering:
PS> alias
Below is the result for a typical system. I am only providing the “Name” column. Also, I massaged the output so the columns would line up and be easier to read.
% -> ForEach-Object ? -> Where-Object ac -> Add-Content asnp -> Add-PSSnapin cat -> Get-Content cd -> Set-Location CFS -> ConvertFrom-String chdir -> Set-Location clc -> Clear-Content clear -> Clear-Host clhy -> Clear-History cli -> Clear-Item clp -> Clear-ItemProperty cls -> Clear-Host clv -> Clear-Variable cnsn -> Connect-PSSession compare -> Compare-Object copy -> Copy-Item cp -> Copy-Item cpi -> Copy-Item cpp -> Copy-ItemProperty curl -> Invoke-WebRequest cvpa -> Convert-Path dbp -> Disable-PSBreakpoint del -> Remove-Item diff -> Compare-Object dir -> Get-ChildItem dnsn -> Disconnect-PSSession ebp -> Enable-PSBreakpoint echo -> Write-Output epal -> Export-Alias epcsv -> Export-Csv epsn -> Export-PSSession erase -> Remove-Item etsn -> Enter-PSSession exsn -> Exit-PSSession fc -> Format-Custom fhx -> Format-Hex fl -> Format-List foreach -> ForEach-Object ft -> Format-Table fw -> Format-Wide gal -> Get-Alias gbp -> Get-PSBreakpoint gc -> Get-Content gcb -> Get-Clipboard gci -> Get-ChildItem gcm -> Get-Command gcs -> Get-PSCallStack gdr -> Get-PSDrive ghy -> Get-History gi -> Get-Item gin -> Get-ComputerInfo gjb -> Get-Job gl -> Get-Location gm -> Get-Member gmo -> Get-Module gp -> Get-ItemProperty gps -> Get-Process gpv -> Get-ItemPropertyValue group -> Group-Object gsn -> Get-PSSession gsnp -> Get-PSSnapin gsv -> Get-Service gtz -> Get-TimeZone gu -> Get-Unique gv -> Get-Variable gwmi -> Get-WmiObject h -> Get-History history -> Get-History icm -> Invoke-Command iex -> Invoke-Expression ihy -> Invoke-History ii -> Invoke-Item ipal -> Import-Alias ipcsv -> Import-Csv ipmo -> Import-Module ipsn -> Import-PSSession irm -> Invoke-RestMethod ise -> powershell_ise.exe iwmi -> Invoke-WmiMethod iwr -> Invoke-WebRequest kill -> Stop-Process lp -> Out-Printer ls -> Get-ChildItem man -> help md -> mkdir measure -> Measure-Object mi -> Move-Item mount -> New-PSDrive move -> Move-Item mp -> Move-ItemProperty mv -> Move-Item nal -> New-Alias ndr -> New-PSDrive ni -> New-Item nmo -> New-Module npssc -> New-PSSessionConfigurationFile nsn -> New-PSSession nv -> New-Variable ogv -> Out-GridView oh -> Out-Host popd -> Pop-Location ps -> Get-Process pushd -> Push-Location pwd -> Get-Location r -> Invoke-History rbp -> Remove-PSBreakpoint rcjb -> Receive-Job rcsn -> Receive-PSSession rd -> Remove-Item rdr -> Remove-PSDrive ren -> Rename-Item ri -> Remove-Item rjb -> Remove-Job rm -> Remove-Item rmdir -> Remove-Item rmo -> Remove-Module rni -> Rename-Item rnp -> Rename-ItemProperty rp -> Remove-ItemProperty rsn -> Remove-PSSession rsnp -> Remove-PSSnapin rujb -> Resume-Job rv -> Remove-Variable rvpa -> Resolve-Path rwmi -> Remove-WmiObject sajb -> Start-Job sal -> Set-Alias saps -> Start-Process sasv -> Start-Service sbp -> Set-PSBreakpoint sc -> Set-Content scb -> Set-Clipboard select -> Select-Object set -> Set-Variable shcm -> Show-Command si -> Set-Item sl -> Set-Location sleep -> Start-Sleep sls -> Select-String sort -> Sort-Object sp -> Set-ItemProperty spjb -> Stop-Job spps -> Stop-Process spsv -> Stop-Service start -> Start-Process stz -> Set-TimeZone sujb -> Suspend-Job sv -> Set-Variable swmi -> Set-WmiInstance tee -> Tee-Object trcm -> Trace-Command type -> Get-Content wget -> Invoke-WebRequest where -> Where-Object wjb -> Wait-Job write -> Write-Output