[behnamoh]

Both are correct. "Farsi" is actually the Arabic version of "Parsi" (meaning "Persian" in, well, Persian). As a Persian, I personally don't use "Farsi".

[erenyeager]

Do you also personally not use any Arabic derived words in Persian? Silly idea to try to remove Arabic influence on Persian.

[behnamoh]

Do you try to use Anglaise to refer to the English language? Bad idea to remove French influence on English.