How to convert date to Month and Year string/name?

How to convert date to Month and Year string/name?

Hello, 

I am trying to find a way to convert a value from a date field to two separate input fields: 
  1. Month Name
  2. Year Name
So if the date in the date field with the name "Invoice_Date" is 31.03.2023 the values should be: 
  1. Month Name: March
  2. Year Name: 2023
How can I do this? With a formula field or a function? 

Thanks for help, 
M.