get request, the same parameters are sent but the result varies

I am trying to use the web request of this page:

http://cartago.lllf.uam.es/grampal/grampal.cgi

(click on the menu on the right where it says "word" and write a word in the text box, for example "vi")

the web request is done like this (This is what I can see from the element inspector in the web console.):

http://cartago.lllf.uam.es/grampal/grampal.cgi?m=analiza&csrf=6bd5abe50f5472ec858ebb5eedaa3cc5&e=vi

this is the response:

When trying to perform the same process and get the same process from postman, I get a different response. Why?

How can I get the same answer from a program or language that allows web requests?

from get request, the same parameters are sent but the result varies