The versions without (x86) are 64-bit, the versions with (x86) are 32-bit.

Powershell is a text based interface like command prompt.

Powershell ISE (Integrated Scripting Environment) is a GUI interface that helps automate the process of creating scripts.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiPxbDQmbb0AhUClWoFHXEKAKwQFnoECBwQAw&url=https%3A%2F%2Fwww.javatpoint.com%2Fwindows-powershell-ise&usg=AOvVaw3E-kC-CIm0JcE5Q1UcP9Q2

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiPxbDQmbb0AhUClWoFHXEKAKwQFnoECAkQAQ&url=https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fpowershell%2Fscripting%2Fwindows-powershell%2Fise%2Fintroducing-the-windows-powershell-ise&usg=AOvVaw1p9ve12WECs-mdaF2GTSzj